1. Subject is male or non-pregnant female 18 years of age or older. Females must be post-menopausal, surgically sterile, or using a medically acceptable form of birth control with a negative urine pregnancy test at Visit 1. For the purpose of this study, the following are considered medically acceptable methods of birth control: Oral Contraceptives, Contraceptive patches, Contraceptive Injection (Depo-Provera®), Contraceptive Implant (Implanon™), Essure®, Vaginal Contraceptive (Nuva-Ring®), IUD, hormonal IUD (Mirena®); double-barrier methods (e.g. condom and spermicide), sterile partner (e.g., vasectomy performed at least six months prior to the subject's initiation of treatment) and abstinence with a documented second acceptable method of birth control should subject become sexually active.