1. Medical Sciences Course, Health Sciences School, Faculdade Ceres (FACERES), São José do Rio Preto, SP, Brazil
2. Medical Sciences Course, Health Sciences School, Universidade Metropolitana de Santos (UNIMES), Santos, SP, Brazil
3. Department of General Surgery, Santa Casa de São Carlos, SP, Brazil
4. Department of Medicine at the Federal University of São Carlos (UFSCAR), SP, Brazil