Kamendu, Abhishek, Abhilasha Singh, and Mahendra Pratap. “Assessment of Autonomic Dysfunction and Heart Rate Variability in Patients With Chronic Obstructive Pulmonary Disease Visiting a Tertiary Care Center in Southern Bihar”. International Journal of Medical and Biomedical Studies 10, no. 1 (February 27, 2026): 144–148. Accessed May 5, 2026. https://www.ijmbs.info/index.php/ijmbs/article/view/3230.