These studies provide an assessment of human exposure to dioxins from all sources.

通过这些研究，对人类对各种来源的二恶英的接触进行了评估。

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WHO will conduct a formal risk assessment of all studied health outcomes from radiofrequency fields exposure by 2012.

世卫组织将在2012年年底之前就所研究的因接触射频场而造成的一切健康后果进行正式的风险评估。

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Praznik said the report ignores the science of risk assessment, which looks at both the hazard and exposure levels.

Darren Praznik说该报告忽略了危险检测科学会考虑危险水平和暴露程度。

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He is also the author of the chapter on exposure assessment for the National Academies of Science Reference Manual on Scientific Evidence.

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In fact, most of the highly precautionary laws and regulations currently on the books include some form of risk assessment that error on the side of caution, building in a host of safety factors that substantially overestimate exposure to justify regulatory actions that may not be necessary.

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Green said the office is recommending two further types of tests: comprehensive medical evaluations of employees still suffering from health problems and a workplace exposure assessment to determine if chemical by-products present in mail, or other factors, could pose serious health risks.

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