D. Biswal, J. . Mishra, B. P. Sahu, S. Jena, and Smruti Ranjan Nayak, “Postdural puncture headache incidence with 25G and 27G Quincke needles after spinal anesthesia for elective cesarean section”, Asian J Med Sci, vol. 14, no. 2, pp. 51–54, Feb. 2023.