title: Secondary sexual characteristics and menses in young girls.
authors.forename: S J
authors.initials: SJ
authors.lastname: Emans
authors.forename: F
authors.initials: F
authors.lastname: Biro
mesh_terms: D000293:Adolescent; D002648:Child; D002908:Chronic Disease; D003625:Data Collection; D005260:Female; D006801:Humans; D008572:Menarche; D015588:Observer Variation; D011336:Probability; D011627:Puberty; D012741:Sexual Maturation