Department of Gastroenterology, Medical Centre Hungarian Defence Forces, Semmelweis University Teaching Hospital Budapest, Budapest, Hungary, herszenyi.laszlo@gmail.com. Department of Gastroenterology, Medical Centre Hungarian Defence Forces, Semmelweis University Teaching Hospital Budapest, Budapest, Hungary. 2nd Department of Surgery, Semmelweis University Budapest, Budapest, Hungary. 2nd Department of Medicine, Semmelweis University Budapest, Budapest, Hungary.