Randomized experimental designs.
Colorado State University, Fort Collins, USA.
G A
GA
Morgan
J A
JA
Gliner
R J
RJ
Harmon
D016022:Case-Control Studies; D018592:Cross-Over Studies; D006801:Humans; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012107:Research Design / Q000592:standards