Wu, S. S., Au, M. K., Pai, W. M., Lin, L. C., & Hu, C. H. (1994). Percutaneous Discectomy for Lumbar Disc Herniation. Journal of Orthopaedic Surgery Taiwan, 11(3), 149-155. https://www.airitilibrary.com/Article/Detail?DocID=10116923-199406-11-3-149-155-a