Gastroenterology Department;
Hospital das Clínicas;
University of Sao Paulo Medical School;
Gastroenterology Department;
University of Sao Paulo Medical School;
Colorectal Division;
State University of Campinas (UNICAMP;
Sao Paulo);
Postgraduate Program in Health Sciences at San Francisco University;
Familial adenomatous polyposis; Adenoma; Duodenum; Surveillance; Endoscopy; Digestive system;