Murni, Indah, Emmanuel Siagian, Nurnaningsih Nurnaningsih, and Nadya Arafuri. “Tricuspid Regurgitation Pressure Gradient to Diagnose Pulmonary Hypertension: A Diagnostic Accuracy Study”. Paediatrica Indonesiana 62, no. 6 (December 5, 2022): 367-72. Accessed January 29, 2023. https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/2718.