title: Double pylorus.
authors.affiliation: Department of Gastroenterology, Kartal Koşuyolu High Specialty Education and Research Hospital, İstanbul, Turkey.
authors.forename: Sabiye
authors.initials: S
authors.lastname: Akbulut
authors.affiliation: Department of Gastroenterology, Numune Education and Research Hospital, Ankara, Turkey.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Erten
authors.affiliation: Department of Gastroenterology, Numune Education and Research Hospital, Ankara, Turkey.
authors.forename: Ersan
authors.initials: E
authors.lastname: Ozaslan
authors.affiliation: Department of Gastroenterology, Numune Education and Research Hospital, Ankara, Turkey.
authors.forename: Emin
authors.initials: E
authors.lastname: Altıparmak