共 22 条
[6]
ROLE AND METHODS OF THE CENTRAL LABORATORY
[J].
CONTROLLED CLINICAL TRIALS,
1983, 4 (04)
:377-387
[9]
Ives Diane G., 1995, Annals of Epidemiology, V5, P278, DOI 10.1016/1047-2797(94)00093-9