title: Transcatheter closure of patent ductus arteriosus: Evaluating the effect of the learning curve on the outcome.
authors.affiliation: Department of Pediatric Cardiology, The International Medical Center, Jeddah, Saudi Arabia.
authors.forename: Ahmad S
authors.initials: AS
authors.lastname: Azhar
authors.forename: Ayman A
authors.initials: AA
authors.lastname: Abd El-Azim
authors.forename: Hamed S
authors.initials: HS
authors.lastname: Habib
keywords: Amplatzer duct occluder; coil closure; complications; experience