1. Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Department of Pathophysiology and Transplantation, Universita degli Studi di Milano, Milan, Italy
2. University College London Hospital, London, United Kingdom
3. State University of Rio de Janeiro, Rio de Janeiro, Brazil
4. Esophageal Lab, Department of Gastroenterology, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
5. Bart’s and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom