Yurdakul Y, Atasoy Ş, Sarıosmanoğlu N, Özer S, Bilgiç A. Congenital absence of the pulmonary valve associated with pulmonary stenosis, large ductus arteriosus and intact ventricular septum. Turk J Pediatr. 1994;36(2):163-169. doi:10.24953/turkjpediatr.1994.3621