TY  - BOOK
AU  - Bhopal,Raj S.
TI  - Concepts of epidemiology: an integrated introduction to the ideas, theories, principles, and methods of epidemiology 
SN  - 0192631551 (pbk.)
PY  - 2002///
CY  - New York
PB  - Oxford University Press
KW  - Epidemiology
N1  - References : p. 297-309
ER  -