Migraine with Aura Is Associated with an Incomplete Circle of Willis: Results of a Prospective Observational Study
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{"title"=>"Migraine with Aura Is Associated with an Incomplete Circle of Willis: Results of a Prospective Observational Study", "type"=>"journal", "authors"=>[{"first_name"=>"Brett", "last_name"=>"Cucchiara", "scopus_author_id"=>"6602507561"}, {"first_name"=>"Ronald L.", "last_name"=>"Wolf", "scopus_author_id"=>"7402145630"}, {"first_name"=>"Lidia", "last_name"=>"Nagae", "scopus_author_id"=>"6504794931"}, {"first_name"=>"Quan", "last_name"=>"Zhang", "scopus_author_id"=>"56104580700"}, {"first_name"=>"Scott", "last_name"=>"Kasner", "scopus_author_id"=>"7005606938"}, {"first_name"=>"Ritobrato", "last_name"=>"Datta", "scopus_author_id"=>"54079694200"}, {"first_name"=>"Geoffrey K.", "last_name"=>"Aguirre", "scopus_author_id"=>"7103126302"}, {"first_name"=>"John A.", "last_name"=>"Detre", "scopus_author_id"=>"7006351633"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-84880845151", "pui"=>"369439072", "doi"=>"10.1371/journal.pone.0071007", "isbn"=>"1932-6203 (Electronic)\\r1932-6203 (Linking)", "sgr"=>"84880845151", "pmid"=>"23923042"}, "id"=>"35b266a7-fe95-38ab-bb1b-913294fd8fd6", "abstract"=>"OBJECTIVE: To compare the prevalence of an incomplete circle of Willis in patients with migraine with aura, migraine without aura, and control subjects, and correlate circle of Willis variations with alterations in cerebral perfusion.\\n\\nMETHODS: Migraine with aura, migraine without aura, and control subjects were prospectively enrolled in a 1∶1∶1 ratio. Magnetic resonance angiography was performed to examine circle of Willis anatomy and arterial spin labeled perfusion magnetic resonance imaging to measure cerebral blood flow. A standardized template rating system was used to categorize circle of Willis variants. The primary pre-specified outcome measure was the frequency of an incomplete circle of Willis. The association between circle of Willis variations and cerebral blood flow was also analyzed.\\n\\nRESULTS: 170 subjects were enrolled (56 migraine with aura, 61 migraine without aura, 53 controls). An incomplete circle of Willis was significantly more common in the migraine with aura compared to control group (73% vs. 51%, p = 0.02), with a similar trend for the migraine without aura group (67% vs. 51%, p = 0.08). Using a quantitative score of the burden of circle of Willis variants, migraine with aura subjects had a higher burden of variants than controls (p = 0.02). Compared to those with a complete circle, subjects with an incomplete circle had greater asymmetry in hemispheric cerebral blood flow (p = 0.05). Specific posterior cerebral artery variants were associated with greater asymmetries of blood flow in the posterior cerebral artery territory.\\n\\nCONCLUSIONS: An incomplete circle of Willis is more common in migraine with aura subjects than controls, and is associated with alterations in cerebral blood flow.", "link"=>"http://www.mendeley.com/research/migraine-aura-associated-incomplete-circle-willis-results-prospective-observational-study-2", "reader_count"=>38, "reader_count_by_academic_status"=>{"Unspecified"=>3, "Professor > Associate Professor"=>1, "Student > Doctoral Student"=>5, "Researcher"=>8, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>5, "Other"=>1, "Student > Master"=>2, "Student > Bachelor"=>5, "Lecturer"=>1, "Lecturer > Senior Lecturer"=>1, "Professor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>3, "Professor > Associate Professor"=>1, "Student > Doctoral Student"=>5, "Researcher"=>8, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>5, "Other"=>1, "Student > Master"=>2, "Student > Bachelor"=>5, "Lecturer"=>1, "Lecturer > Senior Lecturer"=>1, "Professor"=>1}, "reader_count_by_subject_area"=>{"Engineering"=>1, "Unspecified"=>3, "Nursing and Health Professions"=>1, "Agricultural and Biological Sciences"=>3, "Medicine and Dentistry"=>24, "Neuroscience"=>4, "Veterinary Science and Veterinary Medicine"=>1, "Psychology"=>1}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>1}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>24}, "Neuroscience"=>{"Neuroscience"=>4}, "Psychology"=>{"Psychology"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>3}, "Nursing and Health Professions"=>{"Nursing and Health Professions"=>1}, "Unspecified"=>{"Unspecified"=>3}, "Veterinary Science and Veterinary Medicine"=>{"Veterinary Science and Veterinary Medicine"=>1}}, "reader_count_by_country"=>{"United States"=>1, "Poland"=>2, "Chile"=>1, "Australia"=>1, "Ethiopia"=>1}, "group_count"=>5}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1132946"], "description"=>"<p>(MWA, migraine with aura; MwoA, migraine without aura).</p>", "links"=>[], "tags"=>["neuroscience", "neuroimaging", "Population biology", "epidemiology", "Anatomy and physiology", "Neurological system", "Central nervous system", "cardiovascular", "hemodynamics", "Clinical research design", "neurology", "Cerebrovascular diseases", "migraine", "radiology", "Diagnostic radiology", "Magnetic resonance imaging", "willis", "variant", "scores"], "article_id"=>756546, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Brett Cucchiara", "Ronald L. Wolf", "Lidia Nagae", "Quan Zhang", "Scott Kasner", "Ritobrato Datta", "Geoffrey K. Aguirre", "John A. Detre"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0071007.g001", "stats"=>{"downloads"=>1, "page_views"=>11, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Circle_of_Willis_variant_burden_scores_by_group_/756546", "title"=>"Circle of Willis variant burden scores by group.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-07-26 02:10:17"}
  • {"files"=>["https://ndownloader.figshare.com/files/1132947"], "description"=>"a<p>p = 0.07 vs MwoA; <sup>b</sup> p = 0.57 vs MwoA.</p><p>Abbreviations: MWA, migraine with aura; MwoA, migraine without aura; sd, standard deviation; IQR, intraquartile range.</p>", "links"=>[], "tags"=>["neuroscience", "neuroimaging", "Population biology", "epidemiology", "Anatomy and physiology", "Neurological system", "Central nervous system", "cardiovascular", "hemodynamics", "Clinical research design", "neurology", "Cerebrovascular diseases", "migraine", "radiology", "Diagnostic radiology", "Magnetic resonance imaging"], "article_id"=>756547, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Brett Cucchiara", "Ronald L. Wolf", "Lidia Nagae", "Quan Zhang", "Scott Kasner", "Ritobrato Datta", "Geoffrey K. Aguirre", "John A. Detre"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0071007.t001", "stats"=>{"downloads"=>1, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Clinical_characteristics_of_groups_/756547", "title"=>"Clinical characteristics of groups.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-07-26 02:10:17"}
  • {"files"=>["https://ndownloader.figshare.com/files/1132948"], "description"=>"<p>Abbreviations: MWA, migraine with aura; MwoA, migraine without aura; COW, circle of Willis.</p>", "links"=>[], "tags"=>["neuroscience", "neuroimaging", "Population biology", "epidemiology", "Anatomy and physiology", "Neurological system", "Central nervous system", "cardiovascular", "hemodynamics", "Clinical research design", "neurology", "Cerebrovascular diseases", "migraine", "radiology", "Diagnostic radiology", "Magnetic resonance imaging", "willis"], "article_id"=>756548, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Brett Cucchiara", "Ronald L. Wolf", "Lidia Nagae", "Quan Zhang", "Scott Kasner", "Ritobrato Datta", "Geoffrey K. Aguirre", "John A. Detre"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0071007.t003", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Impact_of_sex_on_circle_of_Willis_morphology_/756548", "title"=>"Impact of sex on circle of Willis morphology.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-07-26 02:10:17"}
  • {"files"=>["https://ndownloader.figshare.com/files/1132949"], "description"=>"<p>Abbreviations: MWA, migraine with aura; MwoA, migraine without aura; COW, circle of Willis; VA, vertebral arteries; PCA, posterior cerebral artery.</p>a<p>1 patient in the MWA group had incomplete imaging of the vertebral arteries.</p>", "links"=>[], "tags"=>["neuroscience", "neuroimaging", "Population biology", "epidemiology", "Anatomy and physiology", "Neurological system", "Central nervous system", "cardiovascular", "hemodynamics", "Clinical research design", "neurology", "Cerebrovascular diseases", "migraine", "radiology", "Diagnostic radiology", "Magnetic resonance imaging", "willis", "morphology"], "article_id"=>756549, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Brett Cucchiara", "Ronald L. Wolf", "Lidia Nagae", "Quan Zhang", "Scott Kasner", "Ritobrato Datta", "Geoffrey K. Aguirre", "John A. Detre"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0071007.t002", "stats"=>{"downloads"=>2, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Circle_of_Willis_morphology_between_groups_/756549", "title"=>"Circle of Willis morphology between groups.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-07-26 02:10:17"}
  • {"files"=>["https://ndownloader.figshare.com/files/1132950"], "description"=>"<p>NR  =  not reported.</p>", "links"=>[], "tags"=>["neuroscience", "neuroimaging", "Population biology", "epidemiology", "Anatomy and physiology", "Neurological system", "Central nervous system", "cardiovascular", "hemodynamics", "Clinical research design", "neurology", "Cerebrovascular diseases", "migraine", "radiology", "Diagnostic radiology", "Magnetic resonance imaging", "studies", "examining", "willis", "morphology", "resonance"], "article_id"=>756550, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Brett Cucchiara", "Ronald L. Wolf", "Lidia Nagae", "Quan Zhang", "Scott Kasner", "Ritobrato Datta", "Geoffrey K. Aguirre", "John A. Detre"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0071007.t005", "stats"=>{"downloads"=>2, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Summary_of_studies_examining_circle_of_Willis_morphology_and_migraine_using_magnetic_resonance_angiography_/756550", "title"=>"Summary of studies examining circle of Willis morphology and migraine using magnetic resonance angiography.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-07-26 02:10:17"}
  • {"files"=>["https://ndownloader.figshare.com/files/1132951"], "description"=>"<p>Abbreviations: ACA, anterior cerebral artery; MCA, middle cerebral artery; PCA, posterior cerebral artery; CBF, cerebral blood flow; MWA, migraine with aura; MwoA, migraine without aura; COW, circle of Willis; VA, vertebral arteries.</p>", "links"=>[], "tags"=>["neuroscience", "neuroimaging", "Population biology", "epidemiology", "Anatomy and physiology", "Neurological system", "Central nervous system", "cardiovascular", "hemodynamics", "Clinical research design", "neurology", "Cerebrovascular diseases", "migraine", "radiology", "Diagnostic radiology", "Magnetic resonance imaging", "cerebral", "vascular", "territories"], "article_id"=>756551, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Brett Cucchiara", "Ronald L. Wolf", "Lidia Nagae", "Quan Zhang", "Scott Kasner", "Ritobrato Datta", "Geoffrey K. Aguirre", "John A. Detre"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0071007.t004", "stats"=>{"downloads"=>7, "page_views"=>31, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Comparison_of_mean_cerebral_blood_flow_CBF_ml_100g_min_in_different_vascular_territories_by_patient_characteristics_/756551", "title"=>"Comparison of mean cerebral blood flow (CBF, ml/100g/min) in different vascular territories by patient characteristics.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-07-26 02:10:17"}

PMC Usage Stats | Further Information

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  • {"unique-ip"=>"18", "full-text"=>"15", "pdf"=>"10", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"11"}
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  • {"unique-ip"=>"20", "full-text"=>"21", "pdf"=>"19", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"2"}
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  • {"unique-ip"=>"13", "full-text"=>"15", "pdf"=>"7", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"6"}
  • {"unique-ip"=>"16", "full-text"=>"20", "pdf"=>"12", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"4"}
  • {"unique-ip"=>"9", "full-text"=>"9", "pdf"=>"4", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"4"}
  • {"unique-ip"=>"13", "full-text"=>"13", "pdf"=>"7", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"5"}
  • {"unique-ip"=>"10", "full-text"=>"11", "pdf"=>"6", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"6"}
  • {"unique-ip"=>"14", "full-text"=>"14", "pdf"=>"8", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"7"}
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  • {"unique-ip"=>"28", "full-text"=>"28", "pdf"=>"6", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"9"}
  • {"unique-ip"=>"17", "full-text"=>"19", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"1", "year"=>"2015", "month"=>"10"}
  • {"unique-ip"=>"25", "full-text"=>"33", "pdf"=>"16", "abstract"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"7"}
  • {"unique-ip"=>"17", "full-text"=>"17", "pdf"=>"12", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"8"}
  • {"unique-ip"=>"22", "full-text"=>"19", "pdf"=>"11", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"1", "year"=>"2014", "month"=>"9"}
  • {"unique-ip"=>"25", "full-text"=>"24", "pdf"=>"15", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"10"}
  • {"unique-ip"=>"16", "full-text"=>"17", "pdf"=>"7", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"2"}
  • {"unique-ip"=>"18", "full-text"=>"14", "pdf"=>"12", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"11"}
  • {"unique-ip"=>"14", "full-text"=>"14", "pdf"=>"11", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"12"}
  • {"unique-ip"=>"22", "full-text"=>"24", "pdf"=>"6", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"1"}
  • {"unique-ip"=>"14", "full-text"=>"13", "pdf"=>"5", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"11"}
  • {"unique-ip"=>"12", "full-text"=>"12", "pdf"=>"4", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"12"}
  • {"unique-ip"=>"15", "full-text"=>"13", "pdf"=>"4", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"1"}
  • {"unique-ip"=>"17", "full-text"=>"18", "pdf"=>"4", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"3"}
  • {"unique-ip"=>"14", "full-text"=>"15", "pdf"=>"4", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"4"}
  • {"unique-ip"=>"18", "full-text"=>"18", "pdf"=>"6", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"5"}
  • {"unique-ip"=>"9", "full-text"=>"6", "pdf"=>"9", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"6"}
  • {"unique-ip"=>"20", "full-text"=>"19", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"7"}
  • {"unique-ip"=>"10", "full-text"=>"12", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"8"}
  • {"unique-ip"=>"12", "full-text"=>"10", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"9"}
  • {"unique-ip"=>"8", "full-text"=>"4", "pdf"=>"5", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"10"}
  • {"unique-ip"=>"2", "full-text"=>"2", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"11"}
  • {"unique-ip"=>"9", "full-text"=>"7", "pdf"=>"4", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"12"}
  • {"unique-ip"=>"22", "full-text"=>"22", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"1", "year"=>"2017", "month"=>"1"}
  • {"unique-ip"=>"25", "full-text"=>"24", "pdf"=>"5", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"2"}
  • {"unique-ip"=>"23", "full-text"=>"25", "pdf"=>"6", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"3"}
  • {"unique-ip"=>"19", "full-text"=>"19", "pdf"=>"5", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"1", "year"=>"2017", "month"=>"4"}
  • {"unique-ip"=>"19", "full-text"=>"22", "pdf"=>"3", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"5"}
  • {"unique-ip"=>"17", "full-text"=>"17", "pdf"=>"3", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"6"}
  • {"unique-ip"=>"15", "full-text"=>"18", "pdf"=>"3", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"7"}
  • {"unique-ip"=>"16", "full-text"=>"22", "pdf"=>"5", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"8"}
  • {"unique-ip"=>"43", "full-text"=>"36", "pdf"=>"13", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"9"}
  • {"unique-ip"=>"35", "full-text"=>"35", "pdf"=>"4", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"10"}
  • {"unique-ip"=>"43", "full-text"=>"48", "pdf"=>"5", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"11"}
  • {"unique-ip"=>"19", "full-text"=>"29", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"12"}
  • {"unique-ip"=>"48", "full-text"=>"51", "pdf"=>"7", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"1"}
  • {"unique-ip"=>"46", "full-text"=>"53", "pdf"=>"7", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"3"}
  • {"unique-ip"=>"43", "full-text"=>"45", "pdf"=>"4", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"1"}
  • {"unique-ip"=>"41", "full-text"=>"42", "pdf"=>"2", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"9"}
  • {"unique-ip"=>"50", "full-text"=>"44", "pdf"=>"5", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"4"}
  • {"unique-ip"=>"37", "full-text"=>"49", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"1", "year"=>"2018", "month"=>"5"}
  • {"unique-ip"=>"26", "full-text"=>"25", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"6"}
  • {"unique-ip"=>"17", "full-text"=>"17", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"7"}
  • {"unique-ip"=>"37", "full-text"=>"40", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"8"}
  • {"unique-ip"=>"30", "full-text"=>"40", "pdf"=>"2", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"10"}
  • {"unique-ip"=>"47", "full-text"=>"48", "pdf"=>"8", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"12"}
  • {"unique-ip"=>"47", "full-text"=>"48", "pdf"=>"6", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"11"}
  • {"unique-ip"=>"47", "full-text"=>"49", "pdf"=>"5", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"1", "year"=>"2019", "month"=>"2"}
  • {"unique-ip"=>"53", "full-text"=>"53", "pdf"=>"7", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"3"}
  • {"unique-ip"=>"43", "full-text"=>"47", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"4"}
  • {"unique-ip"=>"52", "full-text"=>"67", "pdf"=>"7", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"5"}

Relative Metric

{"start_date"=>"2013-01-01T00:00:00Z", "end_date"=>"2013-12-31T00:00:00Z", "subject_areas"=>[{"subject_area"=>"/Biology and life sciences/Anatomy", "average_usage"=>[248, 440, 562, 666, 765, 856, 944, 1028, 1112, 1198, 1282, 1362, 1430]}, {"subject_area"=>"/Biology and life sciences/Anatomy and physiology", "average_usage"=>[256, 428]}, {"subject_area"=>"/Biology and life sciences/Physiology", "average_usage"=>[256, 449, 572, 676, 775, 866, 955, 1041, 1127, 1213, 1290, 1370, 1437]}, {"subject_area"=>"/Medicine and health sciences", "average_usage"=>[264, 460, 584, 692, 794, 887, 978, 1067, 1154, 1241, 1328, 1408, 1474]}, {"subject_area"=>"/Medicine and health sciences/Anatomy", "average_usage"=>[248, 441, 564, 668, 769, 859, 948, 1034, 1117, 1202, 1290, 1368, 1437]}, {"subject_area"=>"/Medicine and health sciences/Anatomy and physiology", "average_usage"=>[253, 430]}, {"subject_area"=>"/Medicine and health sciences/Hematology", "average_usage"=>[238, 424, 545, 650, 749, 839, 926, 1006, 1090, 1167, 1243, 1316, 1380]}, {"subject_area"=>"/Medicine and health sciences/Physiology", "average_usage"=>[258, 449, 572, 679, 775, 866, 956, 1041, 1124, 1211, 1291, 1371, 1437]}]}
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