A. K. Phani, “Comparing the Incidence of Postdural Puncture Headache After Diagnostic Lumbar Puncture due to 22 Gauge Standard Versus 25 Gauge Atraumatic Needle : A Randomized Controlled Trial”, Chatt Maa Shi Hosp Med Coll J, vol. 20, no. 1, pp. 67–71, May 2021.