title: Age of menarche and premenarcheal awareness of some Benin City school girls.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001294:Attitude to Health; D002648:Child; D005260:Female; D006801:Humans; D008572:Menarche; D009549:Nigeria; D012736:Sex Education; D012959:Socioeconomic Factors