title: Secondary amenorrhoea following oral contraceptiion--causal or coincidental?
mesh_terms: D000328:Adult; D000568:Amenorrhea / Q000139:chemically induced* / Q000150:complications / Q000453:epidemiology; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007775:Lactation Disorders / Q000139:chemically induced / Q000150:complications; D008599:Menstruation Disturbances / Q000453:epidemiology; D011247:Pregnancy; D013997:Time Factors
chemical_list: D003276:Contraceptives, Oral