CHU Yaounde;
Department of Internal Medicine and Specialties;
Faculty of Medicine and Biomedical Sciences;
University of Yaounde I;
Yaounde;
Cameroon;
La Cathédrale Medical Centre;
Yaounde;
Cameroon;
Yaounde Central Hospital;
Department of Internal Medicine;
Faculty of Medicine and Pharmaceuticals Sciences;
University of Douala;
Douala;
Cameroon;
Yaounde General Hospital;
Department of Internal Medicine and Specialties;
Faculty of Medicine and Biomedical Sciences;
Uni- versity of Yaounde I;
Yaounde;
Cameroon;
Rectal; Bleeding; Colon; Polyps; Colorectal; Cancer; Sigmoidoscopy; Colonoscopy; Cameroon;