At Screening Age: Is at least 20 years of age (at the time of informed consent). At Screening Sex: either sex. Female of child-bearing potential will be eligible for inclusion in this study. However they have to have a negative pregnancy test at the screening visit, agree to further pregnancy testing at the time points determined in study assessments and procedures and practice one of the following methods of contraception from the screening visit until the end of the follow-up examination.