AmenorrheaHypothalamic DiseasesOligomenorrheaMenstruationGalactorrheaPrimary Ovarian InsufficiencyMenstruation DisturbancesHyperprolactinemiaGonadal Dysgenesis, 46,XYAnovulationMenstrual CyclePremenopauseMenorrhagiaFollicle Stimulating HormoneOvarian Function TestsCerebral AqueductAnorexia NervosaTokyoAcneiform EruptionsHypogonadismEndometrial Ablation TechniquesEmpty Sella SyndromeMenopause, PrematurePostpartum PeriodNorpregnadienesVirilismBulimia46, XX Disorders of Sex DevelopmentPituitary DiseasesLuteinizing HormoneOvarySports