Efficacy and acceptability of two monophasic oral contraceptives containing ethinylestradiol and either desogestrel or gestodene.

Abstract
To assess the contraceptive efficacy, cycle control and acceptability of two monophasic oral contraceptives containing either 30 micrograms ethinylestradiol plus 150 micrograms desogestrel or 30 micrograms ethinylestradiol plus 75 micrograms gestodene.