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The author is Cynthia E. Lamy, she is a developmental and National Institute for Early Education Research educational psychologist and research fellow at Rutgers University.
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In response to
This study was conducted by using testing data from 4th-grade students from North Carolina, and comparing if they matched high blood lead levels. This method was conducted in seven counties through normal statistical methods.
guiding question:
What characterizes grocery stores as COVID-19 workplaces?
meta question: