1. Department of General and Visceral Surgery Protestant Hospital of Bethel Foundation University Hospital OWL Campus Bielefeld Bethel University of Bielefeld Bielefeld Germany
2. Department of Internal Medicine and Gastroenterology Protestant Hospital of Bethel Foundation University Hospital OWL Campus Bielefeld Bethel University of Bielefeld Bielefeld Germany
3. Department of Pediatric Surgery Protestant Hospital of Bethel Foundation University Hospital OWL Campus Bielefeld Bethel University of Bielefeld Bielefeld Germany
4. Institute of Pathology KRH Hospital Nordstadt affiliated with the University Hospital of the University of Bielefeld Campus Bielefeld‐Bethel Hannover Germany
5. DTZ Diagnostic and Therapeutic Center Berlin Germany
6. Department of Pediatrics University Hospital Magdeburg Magdeburg Germany