1. Colon and Rectal Surgery Department, Massachusetts General Hospital, Boston
2. Gastrointestinal Surgery Department, Gastromed Institute, Sao Paulo, Brazil
3. Department of General Surgery, Faculdade de Medicina de Jundiaí, Jundiaí, Brazil
4. Department of Obstetrics and Gynecology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
5. Digestive Surgery Division, Department of Gastroenterology, University of São Paulo School of Medicine, São Paulo, Brazil
6. Department of Obstetrics and Gynecology, Faculdade de Medicina de Jundiaí, Jundiaí, Brazil
7. Section of Colon & Rectal Surgery, Massachusetts General Hospital, Harvard Medical School, Boston