Affiliation: | 1.Division of Gastroenterology, Medical Centre, Hungarian Defence Forces, Podmaniczky u 109-111, Budapest, 1062, Hungary ;2.1st Department of Medicine, Semmelweis University, Koranyi S u 2/a, Budapest, 1083, Hungary ;3.Division of Gastroenterology, McGill University Health Centre, Montreal General Hospital, 1650 Ave. Cedar, D16.173.1, Montreal, QC, H3G 1A4, Canada ; |