Khan, Humaira Fayyaz, Muhammad Amjad Hameed, and Umar Ali Khan. “HEART RATE AND BLOOD PRESSURE RESPONSES TO ORTHOSTATIC STRESS DURING HEAD-UP TILT TEST”. Pakistan Journal of Physiology 8, no. 2 (December 20, 1931): 3–5. Accessed November 23, 2024. https://pjp.pps.org.pk/index.php/PJP/article/view/776.