TY  - BOOK
AU  - Selvin,S.
TI  - Epidemiologic analysis : a case-oriented approach
SN  - 0195146182 
AV  - RA652.2.M3 S445 
PY  - 2001///
CY  - Oxford , New York 
PB  - Oxford University Press
KW  - Epidemiology
ER  -