1. Adult Health Post Graduation Program; Medical School; Universidade Federal de Minas Gerais; Belo Horizonte Minas Gerais Brazil
2. Surgery Post Graduation Program; Medical School; Universidade Federal de Minas Gerais; Belo Horizonte Minas Gerais Brazil
3. Alfa Institute of Gastroenterology; Hospital of Clinics; Medical School; Universidade Federal de Minas Gerais; Belo Horizonte Minas Gerais Brazil