Das, K. C., and S. Ferdousi. “Slow Breathing Exercise Improves Cardiac Autonomic Dysfunction in Male Patients With Transfusion Dependent Thalassemia: A Power Spectral Analysis of Heart Rate Variability”. International Journal of Clinical and Experimental Physiology, Vol. 9, no. 2, Aug. 2022, pp. 88-92, doi:10.5530/ijcep.2022.9.2.18.