1. Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University of Bochum, Bochum, Germany;
2. Department of General and Visceral Surgery, Charité – Universitätsmedizin Berlin, Campus Mitte, Berlin, Germany;
3. Dominikus Krankenhaus Berlin, Surgery, Berlin, Germany;
4. Department of Veterenary Medicine, Sabinensteig 15, Berlin, Germany;
5. Department of General, Visceral, Vascular and Thoracic Surgery, Charité, Medical University, Berlin, Germany;
6. Department of General and Visceral Surgery/Division of Molecular Biology, Charité – Universitätsmedizin Berlin, Campus Mitte, Berlin, Germany;
7. Department of Pediatrics, Molecular Imaging Program at Stanford (MIPS), James H. Clark Center, Stanford, CA, USA;