1. Assistant Professor of Experimental Medicine, Department of Surgery, University of Tuebingen.
2. Resident, Department of Surgery, Division of Urology, University of Basle.
3. Director of Clinical Vitaminology, Department of Vitamin and Nutrition Research, F. Hoffmann-La Roche & Co.
4. Group Chief, Biochemical Analytics, Department of Vitamin and Nutrition Research, F. Hoffmann-La Roche & Co.
5. Professor of Urology, Department of Surgery, Division of Urology, University of Basle.