TY  - BOOK
AU  -  Rothman,Kenneth J.
TI  -  Epidemiology : :  an introduction / 
SN  -  0195135539
PY  - 2002///
CY  -  Oxford : 
PB  -  Oxford University Press, 
KW  -  Epidemiologic methods
KW  -  Epidemiology
N1  -  Includes bibliographical references and index
ER  -