title: Endoscopic findings in Saudi and non-Saudi patients with upper gastrointestinal disorders at El-Quawayah Hospital, Riyadh region, Saudi Arabia.
authors.affiliation: Divisions of Gastroenterology and Tropical Medicine, El-Quawayah Hospital, Riyadh, Saudi Arabia.
authors.forename: S A
authors.initials: SA
authors.lastname: Ismail