TY  - BOOK
AU  - Webb, Penny,
AU  - Bain, Chris,
AU  - Pirozzo, Sandi,
TI  - Essential epidemiology: an introduction for students and health professionals 
SN  - 0521546613 (paperback)
PY  - 2005///
CY  - Cambridge : New York
PB  - Cambridge University Press
KW  - Epidemiologic Methods
KW  - Epidemiologic Research Design
KW  - Public Health
N1  - Includes bibliographical references and index
ER  -