Khan, M. A., Majeed, S. M. I. and Sarwar, M. (2013) “HEART RATE VARIABILITY: COMPARISON OF 24 HOURS WITH 72 HOURS HOLTER MONITORING IN HEALTHY ADULTS”, Pakistan Journal of Physiology, 9(2), pp. 26–28. Available at: https://pjp.pps.org.pk/index.php/PJP/article/view/385 (Accessed: 25 April 2024).