Ali Erdogan, M., M. Said Aydogan, H. Arik, and A. Yucel. “Intrathecal Catheter Insertion After Unintentional Dural Puncture”. Annals of Medical Research, vol. 17, no. 3, May 2021, pp. 0211-3, http://www.annalsmedres.org/index.php/aomr/article/view/3484.