title: Congenital anomalies on endoscopic retrograde cholangiopancreatography (ERCP).
authors.affiliation: Gastroenterology Unit, Pakistan Institute of Medical Sciences, Islamabad and Faculty of Pharmacy, University of the Punjab, Lahore, Pakistan.
authors.forename: Q
authors.initials: Q
authors.lastname: Hyder
authors.forename: A
authors.initials: A
authors.lastname: Ayub
authors.forename: K H
authors.initials: KH
authors.lastname: Hyder