1. General, Visceral and Transplant Surgery; University Hospital Tuebingen; Tuebingen Germany
2. Institute of Tropical Medicine, Travel Medicine, Human Parasitology; University Hospital Tuebingen; Tuebingen Germany
3. Institute of Pathology; University Hospital Tuebingen; Tuebingen Germany
4. Department of Pediatric Gastroenterology and Hepatology; University Hospital Tuebingen; Tuebingen Germany