title: Delayed menarche and amenorrhea in ballet dancers.
mesh_terms: D000293:Adolescent; D000568:Amenorrhea / Q000453:epidemiology* / Q000209:etiology; D001835:Body Weight; D003615:Dancing; D005260:Female; D006801:Humans; D008572:Menarche; D008598:Menstruation; D009784:Occupational Diseases / Q000453:epidemiology* / Q000209:etiology; D009839:Oligomenorrhea / Q000453:epidemiology / Q000209:etiology; D013851:Thinness