Effects of three 19-nor steroids on human ovulation and menstruation.
D004967:Estrogens; D005260:Female; D006801:Humans; D008598:Menstruation / Q000502:physiology*; D010060:Ovulation / Q000187:drug effects*; D013256:Steroids
D004967:Estrogens; D013256:Steroids
ESTROGENS/effects; MENSTRUATION/physiology; OVULATION/effect of drugs on