C. Etania, A. . Hanafie, and A. P. Lubis, “Prophylactic Effectiveness of Phenylephrine 100 mcg and Ephedrine 10 mg on the Incidence of Spinal Anesthesia Induced Hypotension in Patients Undergoing Cesarean Section”, IJAR, vol. 7, no. 2, pp. 85–92, Jul. 2025.