RT Journal Article SR Electronic T1 Studies of Spondylolysis found among weightlifters JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 4 OP 8 DO 10.1136/bjsm.6.1.4 VO 6 IS 1 A1 Kotani, Paul T. A1 Ichikawa, N. A1 Wakabayashi, W. A1 Yoshii, T. A1 Koshimune, M. YR 1971 UL http://bjsm.bmj.com/content/6/1/4.abstract AB