title: Trend towards earlier menarche in London, Olso, Copenhagen, the Netherlands and Hungary.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D003718:Denmark; D005260:Female; D006801:Humans; D006814:Hungary; D008131:London; D008572:Menarche; D009426:Netherlands; D009664:Norway