1. Cardiovascular Surgery Discipline, Escola Paulista de Medicina, Federal University of São Paulo, São Paulo, SP, Brazil
2. Sao Lucas Hospital of the Pontifical Catholic University of Porto Alegre, Porto Alegre, RS, Brazil
3. Heart Institute (InCor), University of São Paulo Medical School, São Paulo, SP, Brazil
4. Faculty of Medicine of São José do Rio Preto (FAMERP), São José do Rio Preto, SP, Brazil
5. Faculty of Medical Sciences of Minas Gerais, Belo Horizonte, MG, Brazil
6. Faculty of Medicine of the University Center Assis Gurgacz, Cascavel, PR, Brazil