TY  - BOOK
AU  - Hulley, Stephen B.
TI  - Designing clinical research: an epidemiologic approach
SN  - 0781722187
U1  - 610.72 
PY  - 2001///
CY  - Philadephia
PB  - Lippincott Williams and Wilkins
KW  - RESEARCH
KW  - Epidemiological Studies
KW  - Clinical Trials
KW  - Research methods
ER  -