Affiliation: | 1Clinic for Gastroenterology and Endocrinology, University Medical Center Göttingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany; (S.S.); (S.A.); (I.A.M.);2Clinic for Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany; (M.R.-F.); (C.F.H.); (H.C.) |