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Status indices for vitamins, iron and other minerals were compared in eighty-nine 12- and 13-year-old British girls according to their menarcheal status. The girls were selected at random to participate in the 1997 National Diet and Nutrition Survey of young people aged 4 to 18 years, and were either premenarcheal or postmenarcheal (i.e. had not or had experienced menarche respectively). After adjusting...
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