Ashfaq, Shumaila, Ali, Liaqat, Ashraf, Muhammad, Khan, Rizwan, AND Butt, Mehtash. " Effect of Hydrocortisone on Reducing severity of Post Dural Puncture Headache after Spinal Anesthesia for Elective Caesarean section" Annals of King Edward Medical University [Online], Volume 23 Number 4 (4 December 2017)