DR. ABQARI SHAAD; DR. KAMRAN MIRZA M; DR. ALAM SHAHZAD; DR. HASEEN AZAM; DR. SHAMIM GAUHAR; DR. IZHAR FAZIL M. Transcatheter closure of patent ductus arteriosus in children weighing 5 kg or less: Initial experienc. Pediatric Review: International Journal of Pediatric Research, v. 6, n. 5, p. 246-251, 31 May 2019.