Khalid, Awais, Ahmed Mujadid Khan Burki, Ruhullah, Mustafa Bhutta, Muhammad Tayyab, and Moin Iqbal. “Comparison Between Sphenopalatine Ganglion Block And Greater Occipital Nerve Block in the Management of Post-Dural Puncture Headache in Patients Refractory to Oral Therapy”. Pakistan Armed Forces Medical Journal 76, no. 5 (September 30, 2026): 675–679. Accessed September 30, 2026. https://www.pafmj.org/PAFMJ/article/view/13253.