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Ovulation; Etiology of Menstruation; Uterine Nerve-supply; the Function of the Uterus; Stages of the Menstrual Cycle; Average Duration of the Menstrual Flow; Character of tahe Flow; Relation of Ovulation to Menstruation; the Menstrual Wave; Definition of Menstruation; Premomitory Symptoms of the Flow; Hygiene of Menstruution.
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