TY  - GEN
AU  - Gordis, Leon
TI  - Epidemiology
SN  - 978-1-4160-4002-6
PY  - 2009///
CY  - Philadelphia 
PB  - Saunders Elsevier
KW  - Epidemiologia
KW  - 616-036.22
KW  - 4.ed
KW  - ex.2
KW  - EPI
ER  -