Evolution of the cohort study.
Samet
J M
JM
Department of Epidemiology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA.
Muñoz
A
A
D015331:Cohort Studies; D018450:Disease Progression; D015658:HIV Infections / Q000453:epidemiology; D049673:History, 20th Century; D006801:Humans; D007564:Japan; D008297:Male; D015337:Multicenter Studies as Topic; D014481:United States