Skeptical About Importance of Low Levels of Lead

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Abstract
To the Editor.— Drs Cummins and Goldman1 lament that despite what they feel is "strong evidence of lead's neurotoxic effects, many remain skeptical that low-level, subclinical lead exposure in early childhood impacts subsequent cognition and that the Centers for Disease Control's (CDC) aggressive approach to eradicating lead poisoning, including universal screening, is warranted." Recently Wasserman et al2 published the results of a study performed on the populations of two Yugoslav towns, one of which was the site of a lead smelter, whereas the other town was relatively "lead-free."

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