Agarwal, Amit Kumar, Deewakar Sharma, Sajan Gopal Baidya, and Dipanker Prajapati. 2017. “Variability Among 2D and 3D Methods of Calculating Mitral Valve Area: A Comparative Study With Pressure Half Time Method”. Nepalese Heart Journal 14 (2):13-17. https://doi.org/10.3126/njh.v14i2.18497.