Djusad, Suskhan, et al. “The Outcome of Percutaneous Mitral Balloon Commissurotomy (PMBC) in Pregnant Women With Mitral Stenosis: An Evidence Based Study: Luaran Komisurotomi Balon Mitral Perkutan Pada Perempuan Hamil”. Indonesian Journal of Obstetrics and Gynecology, vol. 8, no. 1, Jan. 2020, pp. 66-69, doi:10.32771/inajog.v7i4.768.