1 Federal University of São Paulo Escola Paulista de Medicina São Paulo Hospital São Paulo Brazil Cardiovascular Surgery Discipline and São Paulo Hospital. Escola Paulista de Medicina. Federal University of São Paulo, São Paulo, Brazil.
2 Pontifical Catholic University of Porto Alegre São Lucas Hospital Porto Alegre RS Brazil São Lucas Hospital of the Pontifical Catholic University of Porto Alegre, Porto Alegre, RS, Brazil.
3 University Center Assis Gurgacz Faculty of Medicine Cascavel PR Brazil Faculty of Medicine of the University Center Assis Gurgacz, Cascavel, PR, Brazil.