• Medical School, University of Bern 1972 - 1978
• University of Bern, Switzerland 1972 - 1978
• Diploma of the Swiss Confoederation for Doctors - Qualified in Medicine 1978
• Doctor of Medicine (MD) 1981 (Thesis)
• Certified in Surgery - Specialist FMH for Surgery 1990
• Privatdozent (Habilitation) 1999
• Vice-Chairman 1999

Residency/Fellowship

• 1979/1980 Department of Pathology of the University of Bern (Prof. Dr. med. H. Cottier)1981
• General Surgery Trauma University Clinic for Visceral Surgery, Inselspital Bern, Switzerland (Prof. Dr. med. R. Berchtold)
• 1982 Thoracic, Heart Vascular Surgery University Clinic for Thoracic, Heart and Vascular Surgery Inselspital Bern, Switzerland (Prof. Dr. med. A. Senn)
• 1983 General Surgery incl. Orthopedic Surgery + Trauma + Urology Department for General Surgery at District Hospital of Thun, Switzerland (Dr. H.P. Müller, Dr. C. Ghielmetti)
• 1984 Urology University Clinic for Urology, Inselspital Bern, Switzerland (Prof. Dr. med. E. Zingg)
• 1984 Neurosurgery University Clinic for Neurosurgery,Inselspital Bern, Switzerland (Prof. Dr. med. H.J. Reulen)
• 1985/1986 General Surgery (incl. Orthopedic Surgery Trauma, Urology, Intensive Care) Department of General Surgery at District Hospital of Biel (Prof. Dr. med. H.R. Schultheiss)

Staff/Consultant Surgeon

• 1987/1990 General Surgery incl. Hepato- biliary-pancreatic Surgery, Emergency-/ Trauma/Intensive Care Transplantation Surgery Department of Visceral and Transplantation Surgery, University of Bern Inselspital Bern, Switzerland (Prof. L.H. Blumgart)

Visiting Assistant Professor for Clinical Surgery

• 1990/1991 General Surgery incl. Emergency Trauma, Intensive Care, Visceral, Thoracic, Vascular Surgery, Urology Transplantation Surgery Los Angeles County - University of Southern California LAC-USC Medical Center, USC School of Medecine Dept. of Surgery, Los Angeles, California USA (A.J. Donovan/T.R. DeMeester, Chairmen) T.V. Bern, A.E. Yellin, H. Silberman, (Professors of Surgery)

Senior Staff/Consultant Surgeon (Oberarzt I)

• 1991/1999 General Surgery (hepato-biliary, pancreatic, foregut, colorectal, endocrine, laparoscopic) incl. Transplantation/ Emergency/ Trauma/ Intensive Care Department of Visceral and Transplantation Surgery, University of Bern Inselspital Bern, Switzerland (Prof. Dr. med. Ph. Gertsch, Prof. Dr. med. A. Czerniak, Prof. Dr. med. M.W. Büchler)

Vice-Chairman

• 1999-2001 General Surgery (hepato-biliary, pancreatic, foregut, colorectal, endocrine, laparoscopic) incl. Transplantation/ Emergency/ Trauma/ Intensive Care Department of Visceral and Transplantation Surgery, University of Bern Inselspital Bern, Switzerland (Prof. Dr. med. M.W. Büchler)
• 2002-   General Surgery (hepato-biliary, pancreatic, foregut, colorectal, endocrine, laparoscopic) incl. Transplantation/ Emergency/ Trauma/ Intensive Care Department of Visceral and Transplantation Surgery, University of Bern Inselspital Bern, Switzerland (Prof. Dr. med. D. Candinas)