title: Menarcheal age in East German girls.
authors: L
authors: L
authors: Pelz
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D005859:Germany, East; D006801:Humans; D008572:Menarche; D012016:Reference Values