[Required number of patients for controlled clinical trials. Groups of unequal size].
D002986:Clinical Trials as Topic; D006801:Humans; D009369:Neoplasms / Q000188:drug therapy; D012107:Research Design; D012494:Sampling Studies
Neobkhodimaia chislennost' grupp nabliudeniia pri kontroliruemykh klinicheskikh issledovaniiakh. Neravnye po chislennosti gruppy.