Sen, Ahmet, Nurgul Orhan Metin, and Yavuz Metin. “Catheter Complication in Combined Spinal Epidural Anesthesia”. Annals of Medical Research 21, no. 1 (May 25, 2021): 0097–0098. Accessed December 22, 2024. http://annalsmedres.org/index.php/aomr/article/view/1999.