Zabetian, Hasan, Mohammad Hasan Damshenas, Navid Kalani, Mojtaba Ghaedi, Lohrasb Taheri, Seyede Sakine Mosavi, and Mohammad Sadegh Sanie Jahromi. “A Comparative Study of Immediate and Delayed Supine Position on Hemodynamic Changes of Patients Undergoing Hemorrhoid and Fischer Surgery under Spinal Anesthesia”. Iranian Journal of Emergency Medicine 9, no. 1 (November 10, 2022): e37. Accessed February 9, 2023.