Affiliation: | (1) Department of General and Visceral Surgery, University Medical Center G?ttingen, G?ttingen, Germany;(2) Klinik und Poliklinik f?r Chirurgie, Universit?tsklinikum Regensburg, Regensburg, Germany;(3) Department of Hepatobiliary and Transplant Surgery, Universit?tsklinikum Hamburg-Eppendorf, Hamburg, Germany;(4) Department of Gastroenterology and Endocrinology, University Medical Center G?ttingen, G?ttingen, Germany |