Authors: De Gruttola, VG Clax, P DeMets, DL Downing, GJ Ellenberg, SS Friedman, L Gail, MH Prentice, R Wittes, J Zeger, SL

Citation: Vg. De Gruttola et al., Considerations in the evaluation of surrogate endpoints in clinical trials: Summary of a National Institutes of Health Workshop, CONTR CL TR, 22(5), 2001, pp. 485-502