Understanding clinical study design.
Seibert
C
C
University of Wisconsin Medical School Department of Medicine, USA.
Zakowski
L
L
D016022:Case-Control Studies; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D019317:Evidence-Based Medicine; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D012107:Research Design