2. The combination and contraceptive kit of claim 1 wherein said progestogen is 3-ketodesogestrel present in a quantity of 75 micrograms per dosage unit.

3. The combination and contraceptive kit of claim 1 wherein said progestogen is desogestrel present in a quantity of 75 micrograms per dosage
unit.

4. The use of an oral daily dosage unit consisting essentially of 70 to 80 micrograms of a progestogen selected from the group of progestogens

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