@article{article02f4ea5e,
title   = {Valve replacement in the Heart Institute, University of Sao Paulo, Brazil},
author = {Pomerantzeff, Pablo Maria Alberto and Zerbini, Euryclides de Jesus and Verginelli, Geraldo and Jatene, Adib},
year = {1989},
doi = {10.1016/0003-4975(89)90632-2},
journal   = {Annals of Thoracic Surgery}
}