TY  - BOOK
AU  - Rothman,Kenneth J.
AU  - Greenland, Sander.
TI  - Modern epidemiology
SN  - 0316757802
PY  - 1998///
CY  - Philadelphia
PB  - Lippincott Raven
KW  - Epidemiology
KW  - Epidemiologic methods
ER  -