the results of a prospective longitudinal controlled study comparing some metabolic effects of a low-dose levonorgestrel-ethinyl oestradiol combined oral contraceptive ( microgynon 30 ) , a desogestrel-ethinyl oestradiol-containing pill ( marvelon ) and a levonorgestrel-ethinyl oestradiol triphasic preparation ( triquilar ) after one year of treatment in ethnic chinese women are presented .
C0717761
levonorgestrel-ethinyl oestradiol
C0023566
levonorgestrel