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  3. "You Have To Have A Margin Of Safety" - Fluoride Expert Kathleen Thiessen (Teaser)

    "You Have To Have A Margin Of Safety" - Fluoride Expert Kathleen Thiessen (Teaser)

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  4. “We measure risk from total exposure not from one isolated source.” - Bruce Lanphear

    “We measure risk from total exposure not from one isolated source.” - Bruce Lanphear

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