Saran, Ajay Kumar. “Heart Rate Variability Biofeedback: Using Slow-Paced Breathing As a Window to Improved Health and Autonomic Regulation”. International Journal of Clinical and Experimental Physiology 11, no. 1 (October 19, 2024): 47-48. Accessed December 13, 2024. https://ijcep.org/index.php/ijcep/article/view/769.