Delgado Montano FJ, Parada Lorenzana J. Ligature of the ductus arteriosus in premature newborns: experience of the National Hospital for Women. Alerta (San Salvador) [Internet]. 2019 Mar. 13 [cited 2024 Aug. 16];2(1):85-91. Available from: https://camjol.info/index.php/alerta/article/view/7536