Sharma, S., R. Kothari, P. Bokariya, S. Srivastava, and S. Vrindavanam. “Normative Data on Heart Rate Variability Time and Frequency Domain Indices in a Healthy Central Indian Population Undergoing Treadmill Exercise: https://doi.Org/10.60787/NMJ-63-4-137”. Nigerian Medical Journal, vol. 63, no. 4, Sept. 2022, pp. 321-5, https://www.nigerianmedjournal.org/index.php/nmj/article/view/137.