TY  - BOOK
AU  - Haynes, R. Brian.
TI  - Clinical epidemiology : How to do clinical practice research 
SN  - 0-7817-4524-1
PY  - 2006///
CY  - Philadelphia
PB  - Lippincott Williams & Wilkins
KW  - Medicine --Research --Epidemiology
N1  - Includes bibliographical references
ER  -