- With Females either o at least 1 year Menopause or after Sterilization or contraceptive pill, mini pill, three-monthly syringe, Implanton, Vaginalring, hormone plaster, hormone spiral at least 1 month before study inclusion or use of the double barrier method with Spermiziddiaphragma plus condom use or renouncement of sexual intercourse during the entire study duration and resolution a pregnancy to avoid with negative β-HCG-test