ect.</div>
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<div class="articletext">Twenty-one signatories of CSPI's letter include David Bellinger, a Harvard researcher who is on the Centers for Disease Control and Prevention advisory panel for childhood lead poisoning, and Michael Weitzman, a University of Rochester pediatrician who was dropped from the panel in favor of an appointee described by critics as "industry-supported" (Science 298:103).   </div>
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<div class="articletext">Comstock is attending a conference and was unable to comment on