1982-2001	Chairman and Head Department of General Surgery, University Ulm
2002-2013	Senior Surgeon, Department of Visceralchirurgie, Donau-Klinikum, Neu-Ulm

Graduation: School of Medicine, University Bonn
Postgraduate Training: Department of Surgery, Free University Berlin
Academic Appointments:
Dean Medical School, Free University Berlin
Dean Clinical School of Medicine, University Ulm
International positions:
Corresponding Member Académie de Chirurgie de Paris
Member German Academy of Natural Sciences LEOPOLDINA
President European Pancreas Club
President German Society of Gastroenterology
Member New York Academy of Science
President International Association of Pancreatology
Vice President Society for Surgery of the Alimentary Tract, USA
Professional Position: Secretary General German Society of Visceral Surgery Editor-in-Chief Langenbecks Archives of Surgery
Original papers: 760 Randomized Controlled Trials: 23Books: Principal author: 14 books, Editor: 14 Books
Honorary Positions: Honorary Member American College of Surgeons, Festschrift Honouring Hans G. Beger, Am J Surg 2007; 194/S:1-175
Honorary Member Japan Surgical Society
Medallion IHBPA, 9th World Congress