Richter, R H [A new method for the evaluation of menstruation disorders during therapy with oral contraceptives]. [electronic resource] - Archiv fur Gynakologie Jun 1971 - 234-6 p. digital Publication Type: Journal Article ISSN: 0003-9128 Standard No.: 10.1007/BF00682899 doi Subjects--Topical Terms: Chlormadinone Acetate--adverse effectsContraceptives, Oral--adverse effectsFemaleHumansKetones--adverse effectsMegestrol--adverse effectsMenstruation Disturbances--chemically inducedPregnanes--adverse effects