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American Dental Association: "Toothbrush Care: Cleaning, Storing, and Replacement."
National Sanitation Foundation: "2011 NSF International Household Germ Study," "How to Clean the Germiest Home Items."
USDA Food Safety and Inspection Service: "Washing Food: Does It Promote Food Safety?"
Reviewed by Laura J. Martin, MD on July 20, 2016
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