Objective. The purpose of this study is to measure the lumbar spine response to typical school backpack loads in healthy children.
目的：本研究的目的是衡量健康儿童腰椎对典型学校背包负荷的反应。
Objective. The purpose of this study is to measure the lumbar spine response to typical school backpack loads in healthy children.
目的：本研究的目的是衡量健康儿童腰椎对典型学校背包负荷的反应。
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