Therapeutic Level IV. See Instructions to Authors for a complete description of levels of evidence.

治疗性研究IV级。具体分级标准见关于证据分级的完整描述。

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Level of evidence Prognostic level II. See Instructions to Authors for a complete description of levels of evidence.

二级预后。见作者证据水平的完整描述的说明。

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Level of evidence Therapeutic level I. See Instructions to Authors for a complete description of levels of evidence.

治疗水平I。证据等级的完整描述见投稿须知。

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The California Attorney General has opposed adding grilled chicken to the list of Prop 65 warnings because it conducted its own scientific review and found no evidence the levels of PHiP in a grilled-chicken sandwich rise to the level of a health threat.

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"We know low levels may impact muscle strength and bone turnover, but if an athlete has adequate levels there is no evidence of an enhanced benefit to performance, so natural talent and athletic ability is more likely, " Stevenson told CNN.

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Evidence for high levels of vertical transmission in Toxoplasma gondii.

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