TY  - GEN
AU  - Hulley, Stephen B.
AU  - Newman, Thomas B.
AU  - Cummings, Steven R.
AU  - Browner, Warren S.
AU  - Grady, Deborah
AU  - Hearst, Norman
TI  - Designing clinical research : anepidemiologic approach
SN  - 0781722187
U1  - 610.72 
PY  - 2001///
CY  - Philadelphia
PB  - Lippincott Williams & Wilins
KW  - Research
KW  - Medicine
KW  - Clinical research
ER  -