1. Department of Gastroenterology & Hepatology and Tytgat Institute for Liver and Intestinal Research; Academic Medical Centre; University of Amsterdam; Amsterdam The Netherlands
2. Department of Medicine I; Friedrich-Alexander-University of Erlangen-Nuremberg; Erlangen Germany
3. Department of Surgery; Academic Medical Centre; University of Amsterdam; Amsterdam The Netherlands
4. Department of Radiology; Academic Medical Centre; University of Amsterdam; Amsterdam The Netherlands
5. Department of Clinical Genetics; Academic Medical Centre; University of Amsterdam; Amsterdam The Netherlands
6. Department of Pediatric Gastroenterology; Louisiana State University Health Sciences Centre; New Orleans LA USA
7. Department of Gastroenterology and Hepatology; St Lucas Andreas Hospital; Amsterdam The Netherlands
8. Department of Pediatric Gastroenterology; Medical Office Building; Lubbock TX USA