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Some cohort studies have indicated that short sleep duration evaluated by questionnaire is one of risk factors for mortality, and incidence of breast cancer and prostate cancer. Meanwhile, we empirically know that requir
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Document Date: 2015-08-28 03:17:43
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Some cohort studies have indicated that short sleep duration evaluated by questionnaire is one of risk factors for mortality, and incidence of breast cancer and prostate cancer. Meanwhile, we empirically know that requir