title: Spine: scientific citation index and its impact factor.
authors.forename: E F
authors.initials: EF
authors.lastname: Walsh
authors.forename: J N
authors.initials: JN
authors.lastname: Weinstein
mesh_terms: D015706:Bibliometrics; D016206:Databases, Bibliographic / Q000706:statistics & numerical data*; D006801:Humans; D010506:Periodicals as Topic / Q000706:statistics & numerical data* / Q000639:trends; D011643:Publishing / Q000706:statistics & numerical data* / Q000639:trends; D012219:Rheumatology / Q000706:statistics & numerical data* / Q000639:trends; D014956:Writing