[Comparison of oral hygiene training between Japanese and American children in Chicago, U.S.A].
D000293:Adolescent; D002641:Chicago; D002648:Child; D002675:Child, Preschool; D005260:Female; D006267:Health Education, Dental; D006801:Humans; D007223:Infant; D007564:Japan; D008297:Male; D009034:Mother-Child Relations; D009910:Oral Hygiene / Q000379:methods*; D014481:United States