1. novineon CRO, Tuebingen, Germany;
2. Faculty of Medicine, Department of Medicine II, Medical Center, University of Freiburg, Freiburg, Germany;
3. Department of Gastroenterology and Oncology, Klinikum Ludwigsburg, Ludwigsburg, Germany;
4. Department of Gastroenterology and Gastrointestinal Oncology, University Medical Centre Goettingen, Goettingen, Germany;
5. Department of Gastroenterology and Hepatology, Triemli Hospital, Zurich, Switzerland;
6. Division of Gastroenterology, Johns Hopkins Hospital, Baltimore, MA, USA;
7. Department of Gastroenterology, Vivantes Klinikum in Friedrichshain, Berlin, Germany;
8. Ovesco Endoscopy AG, Tuebingen, Germany;
9. Medical Faculty, Eberhard Karls University, Tuebingen, Germany;
10. Steinbeis University, Berlin, IHCI-Institute, Tuebingen, Germany