Rauf, M. A., Hayat, A., Shabbir, M., Siddiqa, A., & Parveen, S. (2019). DURATION OF HEAD UP TILT TEST FOR EVALUATION OF VASOVAGAL SYNCOPE. Pakistan Armed Forces Medical Journal, 69(Suppl-3), S375–78. Retrieved from https://www.pafmj.org/PAFMJ/article/view/3545