Affiliation: | 1. Department of Internal Medicine, Endocrinology and Metabolism Center of Internal Medicine, Pediatrics and Dermatology, University of Ulm, Ulm, Germany 2. Deparment of Surgery (Prof. Dr. O. Gütgemann), University of Bonn, Bonn, Germany 3. Biomedical Center, University of Maastricht, Maastricht, Netherlands 4. Department of Surgery I, University of Ulm, Ulm, Germany
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