A. R. I. H. REHANA AYUB, KHALID JAVED BUTT, “Frequency of Hypotension after Subarachnoid Block for Elective C-Section: A Comparison Between Prophylactic Intramuscular Ephedrine and Phenylephrine”, J Fatima Jinnah Med Univ, vol. 8, no. 3, Nov. 2018.