LUMBAR DISC DEGENERATION PROGRESSION IN YOUNG ADULTS IN THEIR 20'S: O35.Makino Hiroto; Kawaguchi, Yoshiharu; Nakano, Masato; Yasuda, Taketoshi; Seki, Shoji; Kimura, TomoatsuSpine Journal Meeting Abstracts: 2014 - Volume - Issue - ppg 24-25 Free