Güneş, D., Konur, H., OZYAPRAK, B. and Erkan, G. 2020. Comparing Different Positions of the Spinal Needle Tip, During Spinal Anesthesia of the Pilonidal Sinus Surgery: he Spinal Needle Tip Spinal Anesthesia. International Journal of Medical Science and Clinical Invention. 7, 01 (Jan. 2020), 4714–4719. DOI:https://doi.org/10.18535/ijmsci/v7i01.08.