C. Koppenaal

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STUDY OBJECTIVE To evaluate the possible role of inappropriate LH secretion, hyperandrogenism, and hyperinsulinemia in the development of polycystic ovaries (PCO) and the polycystic ovary syndrome.(More)
BACKGROUND On the question of how to counsel adolescents with irregular menstrual cycles or oligomenorrhoea, no clear answer has been given. Adolescents with oligomenorrhoea especially show endocrine(More)
Data on changes in hormone concentrations during the first years after menarche are scarce. We studied the relation between gynecological age (age minus age at menarche), hormone concentrations, and(More)
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