Bala, M., M. Chhikara, D. ., K. kaur, T. Bansal, and S. Naz. “Correlation of Distance from Skin to Lumbar Epidural Space With Age and Height of Patients”. International Journal of Advances in Medicine, vol. 7, no. 12, Nov. 2020, pp. 1846-9, doi:10.18203/2349-3933.ijam20205046.