title: 20 most-cited countries in clinical medicine ranked by population size.
authors.forename: Alec
authors.initials: A
authors.lastname: Coppen
authors.forename: John
authors.initials: J
authors.lastname: Bailey
mesh_terms: D015706:Bibliometrics; D035843:Biomedical Research; D015510:Clinical Medicine / Q000706:statistics & numerical data*; D003431:Cross-Cultural Comparison; D005060:Europe; D006801:Humans; D010506:Periodicals as Topic / Q000706:statistics & numerical data; D011156:Population Density; D011643:Publishing / Q000706:statistics & numerical data*; D014481:United States