可扩张通道管系统下经伤椎置钉单节段治疗胸腰段骨折的疗效观察
가확장통도관계통하경상추치정단절단치료흉요단골절적료효관찰
Observation on the Efficacy of Pedicle Screw Placement in Single Segment of the Injured Verte-bral by Quadrant System for the Treatment of Thoracolumbar Fracture
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