Paolo Usai-Satta, Department of Internal Medicine, Division of Gastroenterology, Brotzu Hospital, Cagliari 09124, Italy
Massimo Bellini, Francesca Geri, Gastrointestinal Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa 56122, Italy
Olivia Morelli, Gabrio Bassotti, Gastroenterology and Hepatology Section, Department of Medicine, University of Perugia Medical School, Perugia 06123, Italy
Mariantonia Lai, Gastroenterology Unit, University of Cagliari, Monserrato 09042, Italy
Author contributions: All authors equally contributed to this paper with conception and design of the study, literature review and analysis, drafting and critical revision and editing, and final approval of the final version.
Conflict-of-interest statement: No potential conflicts of interest. No financial support.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author: Paolo Usai-Satta, MD, Attending Doctor, Department of Internal Medicine, Division of Gastroenterology, Brotzu Hospital, Piazza Ricchi 1, Cagliari 09124, Italy. email@example.com
Received: January 23, 2020
Peer-review started: January 23, 2020
First decision: March 6, 2020
Revised: March 8, 2020
Accepted: May 1, 2020
Article in press: May 1, 2020
Published online: May 21, 2020