Khan, A., M. Idrees, N. Ali, and M. I. Rafi. “POST DURAL PUNCTURE HEADACHE AFTER SPINAL ANESTHESIA, COMPARISON BETWEEN 22 GAUGE AND 25 GAUGE WHITACRE SPINAL NEEDLES IN ELECTIVE CAESAREAN SECTION”. Annals of Allied Health Sciences, vol. 6, no. 2, Dec. 2020, https://aahs.kmu.edu.pk/index.php/aahs/article/view/96.