E U Udoeyop

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Menarche, the first menstrual period is believed to be influenced by many factors including altitude. The data of 331 school girls in Jos (1,300 m above sea level), a high altitude Nigerian town, that attained menarche between January 1989 were analysed. The mean menarcheal age for these school girls is 13.21 +/- 1.01 years. This value was not significantly(More)
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