title: Surgical ligation of patent ductus arteriosus in a noncardiac surgical centre.
authors.affiliation: Department of Paediatric Surgery, The Children's Hospital, Pakistan Institute of Medical Sciences (PIMS), Islamabad, Pakistan. drahaq@hotmail.com
authors.lastname: Anwar-ul-Haq
authors.lastname: Ubaidullah
authors.lastname: Samiullah
authors.lastname: Javeria
authors.lastname: Neelofar
authors.forename: M Zaheer
authors.initials: MZ
authors.lastname: Abbasi