共 7 条
[1]
[Anonymous], 1976, INT CLASSIFICATION D
[2]
BROWN BW, 1978, 37 STANF U DIV BIOST
[4]
SCHOENFELD D, 1977, BIOMETRIC SOC ENAR M
[6]
RANDOMIZATION AND STRATIFICATION OF PATIENTS TO CLINICAL TRIALS
[J].
JOURNAL OF CHRONIC DISEASES,
1974, 27 (7-8)
:365-375
[7]
1961, PRINCIPLES MEDICAL S