TY  - BOOK
AU  -  Rothman Kenneth J., Greenland Sander
TI  - Modem epidemiology
SN  - 0316757802
U1  - WA105 
PY  - 1998///
CY  - Philadelphia
PB  - Lippincott-Raven 
KW  - Epidemiology Methods
KW  - Epidemiology
N2  -  Epidemiology, Epidemiology Methods
ER  -