Siahaan, I. H., Kasim, M., Soesanto, A. M., & Harimurti, G. M. (2013). Persistence Pulmonal Hypertension After Balloon Mitral Valvuiloplasty. Indonesian Journal of Cardiology, 29(3), 107–116. https://doi.org/10.30701/ijc.v29i3.182