TY  - BOOK
AU  - Webb,Penny
AU  - Bain,Chris
TI  - Essential epidemiology : an introduction for students and health professionals
T2  - Cambridge medicine
SN  - 978052117731
AV  - MED RA651 W385 
PY  - 2011///
CY  - Cambridge, New York 
PB  - Cambridge University Press
KW  - Epidemiology
KW  - Epidemiologic Methods
ER  -