title: Clinical crossroads: a 21-year-old woman with menstrual irregularity.
authors.forename: J T
authors.initials: JT
authors.lastname: Littell
mesh_terms: D000328:Adult; D003271:Contraceptive Agents, Female / Q000009:adverse effects*; D005260:Female; D006801:Humans; D017258:Medroxyprogesterone Acetate / Q000009:adverse effects*; D008599:Menstruation Disturbances / Q000139:chemically induced*; D045167:Progesterone Congeners / Q000009:adverse effects*
chemical_list: D003271:Contraceptive Agents, Female; D045167:Progesterone Congeners; D017258:Medroxyprogesterone Acetate