TY  - BOOK
AU  - Gordis, Leon,
TI  - Epidemiology
SN  - 9781416040026
U1  - 614.4  22
PY  - 2009///
CY  - Philadelphia, PA
PB  - Saunders/Elsevier
KW  - Epidemiology
KW  - Epidemiologic methods
N1  - Includes bibliographical references and index
ER  -