1. Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, Netherlands
2. Biomedical Data Sciences, Leiden University Medical Center, Leiden, Netherlands
3. Endoscopy Unit, Center for Upper Digestive Diseases, Karolinska Hospital, Stockholm, Sweden
4. Advanced Endoscopy Center Carlos Moreira da Silva, Pedro Hispano Hospital, Matosinhos, Portugal
5. Gastroenterology & Hepatology, University Medical Centre Utrecht, Utrecht, Netherlands
6. Gastroenterology and Hepatology, Erasmus MC, Rotterdam, Netherlands
7. Gastroenterology and Hepatology, University Medical Centre Utrecht, Utrecht, Netherlands