1. Digestive Endoscopy, IRCCS Humanitas Research Hospital, 20089 Rozzano, Milan, Italy
2. Department of Biomedical Sciences, Humanitas University, 20072 Pieve Emanuele, Milan, Italy
3. Gastroenterology Unit, Department of Biomedical Science, Foggia University Hospital, 71122 Foggia, Puglia, Italy
4. Gastroenterology PGIMER, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
5. Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon 31538, Republic of Korea
6. Department of Gastroenterology and Endoscopy, Hospital Enrique Baltodano Briceño, Liberia 50101, Costa Rica
7. Instituto Ecuatoriano de Enfermedades Digestivas—IECED, Gastroenterology Av Abel Romero Castillo, Guayaquil 090505, Guayas, Ecuador
8. Digestive Endoscopy Unit, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo 200, 00128 Rome, Rome, Italy
9. GIUnit, Digestive Diseases, Campus Bio Medico University, 00128 Rome, Rome, Italy
10. Digestive Endoscopy, Fatebenefratelli Isola Tiberina—Gemelli Isola, 00186 Rome, Rome, Italy
11. Gastrointestinal Endoscopy Unit—Humanitas Mater Domini, 21100 Castellanza, Varese, Italy
12. Gastroenterology and Digestive Endoscopy Unit, Mater Olbia Hospital, 07026 Olbia, Sassari, Italy
13. Policlinico Casilino Hospital, 00169 Rome, Rome, Italy
14. Endoscopic Unit, ASST Santi Paolo e Carlo, 20142 Milan, Milan, Italy