[Clinical trials. When and why: the principle of randomization and double-blind method].
de Giuli
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Centro di Coordinamento per Studi Clinici Fondazione Salvatore Maugeri Via Pinidolo, 23, 25064 Gussago, BS. degiuli.fsm.gussago@numerica.it
D004311:Double-Blind Method; D016032:Randomized Controlled Trials as Topic / Q000379:methods*