Di Cianni, S., M. Rossi, and A. Casati, et al. “Spinal Anesthesia: An Evergreen Technique”. Acta Biomedica Atenei Parmensis 79, no. 1 (April 1, 2008): 9–17. Accessed July 27, 2024. https://mattioli1885journals.com/index.php/actabiomedica/article/view/1852.