TY  - BOOK
AU  - Gordis,Leon
TI  - Epidemiology
SN  - 9781416040026 (pbk.)
U1  - 614.4 
PY  - 2009///
CY  - Philadelphia, PA
PB  - Elsevier/Saunders
KW  - Epidemiology
N1  - Includes bibliographical references and index
ER  -