TY  - BOOK
AU  - Rothman,Kenneth J.
TI  - Epidemiology: an introduction 
SN  - 0195135539
U1  - 614.4 21
PY  - 2002///
PY  - 1423///]
CY  - New York, N.Y.
PB  - Oxford University Press
KW  - Epidemiology
KW  - Epidemiologic Methods
N1  - Includes bibliographical references and index
ER  -