TY  - JOUR 
T1  - Pregnancy does not cause structural bioprosthesis alteration
JO  - Arquivos Brasileiros de Cardiologia
A1  - Avila, Walkiria Samuel
A1  - Grinberg, Max
SN  - 0066-782X
UL  - 10.1590/S0066-782X1999000400001
VL  - 72 
Y1  - 1999
PB  - Brasil 
ER  -