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90°~90°牵引治疗儿童股骨干上1/3骨折@石青$天津市天津医院小儿骨科!天津市解放南路
90 ° ~ 90 ° traction treatment of children on the femoral shaft fracture @ Shiqing $ Tianjin Tianjin Hospital pediatric orthopedics Tianjin Jiefang South Road