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  1. people worldwide have osteoporosis. Health experts say that number will increase greatly as the world's population gets older. After all, everyone's bones weaken with age.   全世界大约有两亿人患骨质疏松症。健康专家说,当世界人口愈加老龄化时,骨质疏松症的发病...
    2017.05.04 09:27:00