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        [1] Wang B L,Li X L,Xu X B,et al. Prevalence of and risk factors for subjective symptoms in urban preschool children without a cause identified by the guardian[J].Int Arch Occup Environ Health,2012,85:483-491.[2] Bourbeau J,Brisson C,Allaire S,et al. Prev    (共 10323 字)     [閱讀本文] >>

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