M. A. Rauf, A. Hayat, M. Shabbir, A. Siddiqa, and S. Parveen, “DURATION OF HEAD UP TILT TEST FOR EVALUATION OF VASOVAGAL SYNCOPE”, Pak Armed Forces Med J, vol. 69, no. Suppl-3, pp. S375–78, Nov. 2019, Accessed: Sep. 27, 2024. [Online]. Available: https://pafmj.org/PAFMJ/article/view/3545