title: Secondary amenorrhoea in athletes.
mesh_terms: D000293:Adolescent; D000328:Adult; D000568:Amenorrhea / Q000453:epidemiology / Q000209:etiology*; D001824:Body Constitution; D005260:Female; D006801:Humans; D010806:Physical Education and Training; D012420:Running; D013178:Sports Medicine; D013997:Time Factors