Letter: Levels of fluoride.
D004032:Diet; D005060:Europe; D005457:Fluoridation; D005459:Fluorides / Q000378:metabolism*; D006801:Humans; D013662:Tea; D006113:United Kingdom; D014481:United States; D014867:Water / Q000378:metabolism
D013662:Tea; D014867:Water; D005459:Fluorides