Pandey, M., N. Sivakumar, and V. Test. “Trends and Factors Affecting in-Hospital Mortality of Patients With Pulmonary Arterial Hypertension”. International Journal of Research in Medical Sciences, vol. 12, no. 9, Aug. 2024, pp. 3362-9, doi:10.18203/2320-6012.ijrms20242617.