10.Manz F, Wentz A. The importance of good hydration for the prevention of chronic diseases. Nutr Rev. 2005 Jun;63(6 Pt 2):S2-5. http://www.ncbi.nlm.nih.gov/pubmed/16028566
11.Centers for Disease Control and Prevention 1600 Clifton Rd. Atlanta, GA 30333, USA 800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 – Contact CDC–INFO http://www.cdc.gov/vaccines/schedules/hcp/child-adolescent.html
12.U.S. Preventive Services Task Force. Screening for Visual Impairment in Children Ages 1 to 5: Clinical Summary of U.S. Preventive Services Task Force Recommendation. AHRQ Publication No. 11-05151-EF-3, January 2011. http://www.uspreventiveservicestaskforce.org/uspstf11/vischildren/vischildsum.htm