Tariq Ashraf, et al. “Left Atrial Appendage Clot With Severe Mitral Stenosis, Responders and Non-Responders With Anticoagulation, a Prospective Cohort Study”. International Journal of Endorsing Health Science Research, vol. 10, no. 3, Sept. 2022, pp. 361-7, doi:10.29052/IJEHSR.v10.i3.2022.361-367.