Which are the leading countries in clinical medicine research? A citation analysis (1981-1998).
Fava
G A
GA
Ottolini
F
F
Sonino
N
N
D001208:Asia; D015706:Bibliometrics; D015510:Clinical Medicine; D016208:Databases, Factual; D005062:European Union; D006801:Humans; D007843:Latin America; D012106:Research / Q000592:standards / Q000706:statistics & numerical data*; D014481:United States