TY  - GEN
AU  - Chow, Shein-Chung
AU  - Pei-Liu, Jen
TI  - Design and Analysis of Clinical Trials: concepts and methodologies
SN  - 0471249858
U1  - 615.19 
PY  - 2004///
CY  - New York
PB  - John Wiley Sons
ER  -