Nasir, Zeeshan, Saira Mahboob, Tariq Mehmood, and Syed Haider. 2020. “POST DURAL PUNCTURE HEADACHE: A COMPARISON OF MIDLINE AND PARAMEDIAN APPROACH OF SPINAL ANESTHESIA”. PAFMJ 70 (4), 1188-92. https://pafmj.org/index.php/PAFMJ/article/view/5119.