Secular trends in different racial groups.
D000704:Analysis of Variance; D044466:Asian People; D044383:Black People; D003724:Dental Arch / Q000033:anatomy & histology*; D005006:Ethnicity; D005191:Family Characteristics; D006801:Humans; D044469:Racial Groups; D012863:Skeleton; D012886:Skull / Q000033:anatomy & histology*; D014070:Tooth / Q000033:anatomy & histology*; D044465:White People