Institution: | 1. Section of Endocrine Surgery, Division of General Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria;2. Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland;3. Section for Clinical Biometrics, Center for Medical Statistics, Informatics, and Intelligent Systems (CeMSIIS), Medical University of Vienna, Vienna, Austria |