1 Department of Internal Medicine and Therapeutics, University of Pavia, Italy; Gastroenterology and Digestive Endoscopy unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy. Electronic address: [email protected].
2 Department of Internal Medicine and Therapeutics, University of Pavia, Italy.
3 Department of Internal Medicine and Therapeutics, University of Pavia, Italy; Gastroenterology and Digestive Endoscopy unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.