TY  - BOOK
AU  - Kelsey,Jennifer L.
TI  - Methods in observational epidemiology
SN  - 0195083776
PY  - 1996///
CY  - New York, N.Y.
PB  - Oxford University Press
KW  - Epidemiology
KW  - Research
KW  - Methodology
KW  - Statistical methods
N1  - Includes bibliographical references and index
ER  -