Reported use of data monitoring committees in the main published reports of randomized controlled trials: a cross-sectional study. by Sydes, MR, Altman, D, Babiker, AB, Parmar, M, Spiegelhalter, D

Systematic qualitative review of the literature on data monitoring committees for randomized controlled trials. by Sydes, MR, Spiegelhalter, D, Altman, D, Babiker, AB, Parmar, M

Issues in data monitoring and interim analysis of trials. by Grant, A, Altman, D, Babiker, AB, Campbell, M, Clemens, F, Darbyshire, J, Elbourne, DR, McLeer, S, Parmar, M, Pocock, S, Spiegelhalter, D, Sydes, MR, Walker, A, Wallace, SA