title: An unusual cause of upper gastrointestinal bleeding.
authors.affiliation: Gastroenterology and Liver Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Shabnam
authors.initials: S
authors.lastname: Shahrokh
authors.affiliation: Gastroenterology and Liver Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Zali