TY  - JOUR 
T1  - Norman Shumway
JO  - Brazilian Journal of Cardiovascular Surgery
A1  - Stolf, Noedir
SN  - 0102-7638
UL  - 10.1590/S0102-76382006000100021
VL  - 21 
Y1  - 2006
PB  - Brasil 
ER  -