Role of Targeted Neonatal Echocardiography in Diagnosis of Patent Ductus Arteriosus in Neonatal Intensive Care Unit. - Risha, Amr I.; Saad, H. M.; Elsayed, L. M.; Shedeed, Soad; Mokhtar, Wesam A.; Shehab, Mohammed M. (Zagazig University Medical Journal, 2024)