title: Skeletal maturity of youths 12--17 years racial, geographic area, and socioeconomic differentials. United States, 1966-1970.
mesh_terms: D000293:Adolescent; D000365:Age Determination by Skeleton; D001846:Bone Development; D002648:Child; D005006:Ethnicity; D005260:Female; D005843:Geography; D006306:Health Surveys; D006801:Humans; D008297:Male; D012959:Socioeconomic Factors; D014481:United States