TY  - BOOK
AU  - Koepsell, Thomas D
AU  - Weiss, Noel S
TI  - Epidemiologic methods : studying the occurrence of illness
SN  - 195150783
SN  - 200203376
U1  - 614.4 KOE 
PY  - 2003///
CY  - Oxford
PB  - Oxford University Press
KW  - Epidemiologic Methods
KW  - Epidemiology - Methodology
N1  - Includes bibliographical references and index
ER  -