The menarche.
Cochrane
R
R
St Mary's Hospital Medical School, London.
D000293:Adolescent; D000375:Aging / Q000502:physiology; D002648:Child; D005260:Female; D006266:Health Education; D006801:Humans; D008572:Menarche / Q000502:physiology*; D008599:Menstruation Disturbances / Q000209:etiology; D013997:Time Factors