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Menstruation in Girls and Adolescents: Using the Menstrual Cycle as a Vital Sign

Committee Opinion Number 651, December 2015

(Replaces Committee Opinion 349, November 2006)

ABSTRACT Despite variations worldwide and within the US population median age at menarche has remained relatively stablebetween 12 years and 13 yearsacross wellnourished populations in developed countries Environmental factors including socioeconomic conditions nutrition and access to preventive h...

December 2015

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American Congress of Obstetricians and Gynecologists
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