Loni, Shamshad Begum Abdul Razak. “Valsalva Ratio: A Measure of Stress in First Year Medical Students”. International Journal of Research in Medical Sciences 3, no. 7 (January 10, 2017): 1599–1604. Accessed October 14, 2025. https://www.msjonline.org/index.php/ijrms/article/view/1561.