%0 Journal Article %T The Essence of Clinical Practice Guidelines for Ossification of Spinal Ligaments, 2019: 1. Epidemiology of OPLL. %A Hasegawa T %J Spine Surg Relat Res %V 5 %N 5 %D 2021 %M 34708164 暂无%R 10.22603/ssrr.2021-0096 %X