Jahan, Kawser, Noorzahan Begum, and Sultana Ferdousi. “Heart Rate Variability in Patients With Rheumatoid Arthritis”. Journal of Bangladesh Society of Physiologist 7, no. 2 (April 5, 2013): 78–82. Accessed July 17, 2024. https://banglajol.info/index.php/JBSP/article/view/14455.