Ramineni, H. B., P. Jammula, S. Mukiri, and V. Suryadevara. “Eisenmenger Syndrome in a Patient With Ventricular Septal Defect: A Case Report”. International Journal of Research in Medical Sciences, vol. 3, no. 1, Jan. 2017, pp. 376-8, https://www.msjonline.org/index.php/ijrms/article/view/1279.