TY  - JOUR 
T1  - Paternity after vasectomy with two previous semen analyses without spermatozoa
JO  - Sao Paulo Medical Journal
A1  - Lucon, Marcos
A1  - Lucon, Antonio Marmo
A1  - Pasqualoto, Fabio Firmbach
A1  - Srougi, Miguel
SN  - 1516-3180
UL  - 10.1590/S1516-31802007000200011
VL  - 125 
Y1  - 2007
PB  - Brasil 
ER  -