Soesanto, A. M., Y. Yuniadi, M. Mansyur, and D. Kusmana. “A Novel Echocardiography Formula for Calculating Predicted Pulmonary Vascular Resistance in Patients With Mitral Stenosis”. Medical Journal of Indonesia, vol. 25, no. 2, July 2016, pp. 76-84, doi:10.13181/mji.v25i2.1405.