Tercan, Mehmet, Tuğba Bingöl Tanrıverdi, Gülçin Patmano, Ahmet Atlas, Ahmet Kaya, and Ayşe Güsün Halitoğlu. “Comparison of the Effects of Sagittal Versus Transvers 25-Gauge Quincke Needle Insertion on Post-Dural Puncture Headache Development”. Medical Science and Discovery 7, no. 7 (July 16, 2020): 554-559. Accessed August 3, 2020. https://medscidiscovery.com/index.php/msd/article/view/396.