1. Department of Digestive Surgery; Escola Paulista de Medicina (UNIFESP); São Paulo São Paulo Brazil
2. Post-graduation Program; Barretos Cancer Hospital; Barretos São Paulo Brazil
3. Department of Oncology; Hospital Israelita Albert Einstein; São Paulo São Paulo Brazil
4. Department of Surgical Oncology; Hospital Santa Casa; Campo Mourão Paraná Brazil
5. Department of Radiation Oncology, Hôpital Tenon AP-HP; Sorbonne University; Paris France
6. Department of Digestive, Pancreatic and Endocrine Surgery; Hôpital Cochin AP-HP; Paris France