No Acceleration of Intervertebral Disc Degeneration after a Single Injection of Bupivacaine in Young Age Group with Follow-Up of 5 Years. - Seiji Ohtori; Gen Inoue; Sumihisa Orita; Yawara Eguchi; Nobuyasu Ochiai; Shunji Kishida; Kazuki Kuniyoshi; Junichi Nakamura; Yasuchika Aoki; Tetsuhiro Ishikawa; Masayuki Miyagi; Hiroto Kamoda; et al. (Asian Spine Journal, 2013)