TY  - BOOK
AU  - 
AU  - Hulley, Stephen B.
ED  - 
ED  - 
ED  - 
ED  - 
TI  - : an epidemiologic approach 
SN  - 0781722187;9780781722186
SN  - 2
PY  - 2001///;copyright 2001.46
CY  - Philadelphia
PB  - Lippincott Williams & Wilkins
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Technique.;Research;Methodology.;Research;Methodology
KW  - Clinical trials;Medicine;Epidemiology;Epidemiologic Methods.;Research Design
N1  - Includes bibliographical references and index; 5
ER  -