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一项新的研究报告称,睡眠质量差会使得70岁以上的老年妇女更有可能跌倒,而摔倒是老年人受伤和死亡的一个主要原
A new study reports that poor quality of sleep makes older women over the age of 70 more likely to fall, and falls are a major cause of injuries and deaths among the elderly