Howard, G Low-dose continuous chlormadinone acetate as an oral contraceptive. A clinical trial. [electronic resource] - Lancet (London, England) Jul 1969 - 24-6 p. digital Publication Type: Journal Article ISSN: 0140-6736 Standard No.: 10.1016/s0140-6736(69)92599-9 doi Subjects--Topical Terms: Acetates--administration & dosageChlormadinone Acetate--administration & dosageContraceptives, Oral--administration & dosageFemaleHumansLactation--drug effectsMenstruation--drug effectsMenstruation Disturbances--chemically inducedPregnancy