1. Department of Visceral Surgery and Medicine, Bern University Hospital, University of Bern, Bern, Switzerland
2. Division of Endocrinology, Diabetes and Clinical Nutrition, Bern University Hospital, University of Bern, Bern, Switzerland
3. Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
4. Department of Anaesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Bern, Switzerland