Rimi, Sadia, Sultana Ferdousi, and Shamima Sultana. “Age-Related Cardiovascular Response to Tilt Test in Healthy Volunteers of Both Sexes”. Bangabandhu Sheikh Mujib Medical University Journal 13, no. 1 (February 19, 2020): 13-17. Accessed August 11, 2020. https://www.banglajol.info/index.php/BSMMUJ/article/view/45478.