1. Department of Surgery, Gastroenterology and Digestive Endoscopy Unit, Presidio Ospedaliero Santa Chiara, Trento, Italy;
2. Poison Control Centre and National Toxicology Information Centre – Toxicology Unit, Istituti Clinici Scientifici Maugeri, IRCCS Maugeri Hospital and University of Pavia, Pavia, Italy;
3. Department of Internal Medicine, Gastroenterology Unit, Ospedale dell’Angelo and Ospedale SS Giovanni e Paolo, Venice, Italy