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World at work
World at work: Charcoal producing industries in northeastern Brazil

https://doi.org/10.1136/oem.2004.015172

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    Footnotes

    • Ethics approval: This study received the approval of the Institutional Review Board of the University of North Carolina, School of Public Health, the Bioethics Committee of the Centro Estadual de Oncologia in Brasil, and the Human Subjects Research Review Official of the US Environmental Protection Agency.