1   Department of Medicine and Surgery, University of Enna 'Kore', Enna, Italy

2   Gastroenterology Unit, Umberto I Hospital, Enna, Italy

,

Alessandro Vitello

3   Gastroenterology and Endoscopy Unit, S. Elia Hospital, ASP di Caltanissetta, Caltanissetta, Italy (Ringgold ID: RIN220706)

,

Endrit Shahini

4   Gastroenterology Unit, National Institute of Gastroenterology-IRCCS "Saverio de Bellis", Castellana Grotte, Bari, Italy (Ringgold ID: RIN18529)

,

Roberto Vassallo

5   Gastroenterology Unit, Buccheri La Ferla Fatebenefratelli Hospital, Palermo, Italy (Ringgold ID: RIN213309)

,

Emanuele Sinagra

6   Gastroenterology and Endoscopy Unit, Fondazione Istituto San Raffaele G Giglio di Cefalù, Cefalu, Italy (Ringgold ID: RIN97860)

,

Socrate Pallio

7   Digestive Diseases Endoscopy Unit, Policlinico G. Martino Hospital, University of Messina, Messina, Italy (Ringgold ID: RIN18980)

,

Giuseppinella Melita

7   Digestive Diseases Endoscopy Unit, Policlinico G. Martino Hospital, University of Messina, Messina, Italy (Ringgold ID: RIN18980)

,

Daryl Ramai

8   Gastroenterology and Hepatology, The University of Utah School of Medicine, Salt Lake City, United States (Ringgold ID: RIN12348)

,

Marco Spadaccini

9   Endoscopy Unit, IRCCS Humanitas Research Hospital, Rozzano, Italy (Ringgold ID: RIN9268)

10   Department of Biomedical Sciences, Humanitas University, Milan, Italy (Ringgold ID: RIN437807)

,

9   Endoscopy Unit, IRCCS Humanitas Research Hospital, Rozzano, Italy (Ringgold ID: RIN9268)

10   Department of Biomedical Sciences, Humanitas University, Milan, Italy (Ringgold ID: RIN437807)

,

11   Gastroenterology Unit, Department of Medical Sciences, University of Foggia, Foggia, Italy (Ringgold ID: RIN18972)