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Dyfyniad Arddull ChicagoSydes, MR, D. Altman, AB Babiker, M. Parmar, and D. Spiegelhalter. Reported Use of Data Monitoring Committees in the Main Published Reports of Randomized Controlled Trials: A Cross-sectional Study. 2004.
Dyfyniad MLASydes, MR, et al. Reported Use of Data Monitoring Committees in the Main Published Reports of Randomized Controlled Trials: A Cross-sectional Study. 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.