From the Centers for Disease Control and Prevention. Knowledge of the purpose of community water fluoridation--United States, 1990.
D000293:Adolescent; D000328:Adult; D000368:Aged; D005457:Fluoridation; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008875:Middle Aged; D011639:Public Opinion; D012494:Sampling Studies; D011795:Surveys and Questionnaires; D014481:United States