Investigation of Three Contraceptive Hormone Patches in Regard to Inhibition of Ovulation Following Application Over 3 Treatment Cycles in Healthy, Young Women.

0.55 mg ethinyl estradiol (EE) + 2.1 mg gestodene (GSD) per patch; 3 treatment cycles; 21 days per treatment cycle, i.e. 3 x 7 days patch-wearing phase and a patch-free interval of 7 days

0.35 mg ethinyl estradiol (EE) + 0.67 mg gestodene (GSD) per patch; 3 treatment cycles; 21 days per treatment cycle, i.e. 3 x 7 days patch-wearing phase and a patch-free interval of 7 days

0.275 mg ethiny estradiol (EE) + 1.05 mg gestodene (GSD) per patch; 3 treatment cycles; 21 days per treatment cycle, i.e. 3 x 7 days patch-wearing phase and a patch-free interval of 7 days