椎弓根钉内固定系统结合椎间融合治疗严重腰椎滑脱的临床效果
추궁근정내고정계통결합추간융합치료엄중요추활탈적림상효과
The Clinical Effect of Pedicle Screw Fixation Combined with Interbody Fusion in Treatment of Severe Lumbar Spondylolisthesis
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