[Epidemiological methods 8: blinded randomized trial: what one covers up is what one obtains].
Schulz
Kenneth F
KF
Family Health International, PO Box 13950, Research Triangle Park, NC 27709, USA. KSchulz@fhi.org
Grimes
David A
DA
D004311:Double-Blind Method; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000592:standards*; D015203:Reproducibility of Results; D012107:Research Design / Q000592:standards*; D016896:Treatment Outcome