Hariyanti, L., S. Widjaja, and D. Hidayah. “TNF-? As a Predictive Factor of Pulmonary Hypertension in Children With Down Syndrome With and Without Congenital Heart Disease”. Paediatrica Indonesiana, Vol. 62, no. 1, Feb. 2022, pp. 61-5, doi:10.14238/pi62.1.2022.61-5.