Comparison of Capsule Endoscopy and Magnetic Resonance Imaging for the Detection of Polyps of the Small Intestine in Patients with Familial Adenomatous Polyposis or with Peutz-Jeghers’ Syndrome - Caspari, R; von Falkenhausen, M; Krautmacher, C; Schild, H; Heller, J; Sauerbruch, T (Endoscopy, 2004)