Sattarzadeh, R., A. Tavoosi, M. Saadat, L. Derakhshan, B. Khosravi, and B. Geraiely. “Calculation of Mitral Valve Area in Mitral Stenosis: Comparison of Continuity Equation and Pressure Half Time With Two-Dimensional Planimetry in Patients With and Without Associated Aortic or Mitral Regurgitation or Atrial Fibrillation”. Acta Medica Iranica, Vol. 55, no. 11, Jan. 2018, pp. 696-04, http://acta.tums.ac.ir/index.php/acta/article/view/5895.