Maharjan, Devendra. “Occurrence of Headache With and Without Pillow Cushion in Supine Position After Spinal Anesthesia”. Nepal Journal of Obstetrics and Gynaecology 12, no. 1 (January 15, 2018): 55–58. Accessed November 24, 2024. https://nepjol.info/index.php/NJOG/article/view/18983.