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World Health Organization. Hand washing and food safety fact sheet 2. External; Rabie T, Curtis V. Handwashing and risk of respiratory infections: a quantitative systematic review. External Trop Med Int Health. 2006;11(3):258-67. Hammond B, Ali Y, Fendler E, Dolan M, Donovan S. Effect of hand sanitizer use on elementary school absenteeism.
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