TY  - BOOK
AU  - Gordis,Leon
TI  - Epidemiology
SN  - 1416040026 :
AV  - RA651 .G58
PY  - 2009///
CY  - Philadelphia, PA
PB  - Saunders Elsevier
KW  - Epidemological methods
KW  - Epidemology
N1  - Includes index
ER  -