1 Surgery Department, Hospital Israelita Albert Einstein, Av Albert Einstein, 627 Bloco A1, Room 223, 05652-900, Sao Paulo, Brazil. sergio@santoro.med.br.
2 Surgery Department, Hospital Israelita Albert Einstein, Av Albert Einstein, 627 Bloco A1, Room 223, 05652-900, Sao Paulo, Brazil.
3 Surgery Department, Hospital Israelita Albert Einstein and Hospital das Clinicas - FMUSP, Sao Paulo, Brazil.