title: Hematocrit: maturity relationship in adolescence.
mesh_terms: D000293:Adolescent; D000328:Adult; D001940:Breast / Q000254:growth & development; D002648:Child; D005006:Ethnicity; D005260:Female; D005836:Genitalia, Female / Q000254:growth & development; D005837:Genitalia, Male / Q000254:growth & development; D006128:Growth; D006400:Hematocrit; D006801:Humans; D007182:Income; D008297:Male; D013737:Testis / Q000254:growth & development