Das, Kamol Chandra, and Sultana Ferdousi. “Effect of Slow Breathing Exercise on Non Linear Heart Rate Variability in Transfusion Dependent Thalassemic Patients”. Journal of Bangladesh Society of Physiologist 14, no. 1 (June 27, 2019): 26–32. Accessed April 30, 2024. https://www.banglajol.info/index.php/JBSP/article/view/41998.