Study Visit 3 (Second Inpatient) This visit will take place one week after your first outpatient visit (about 2 weeks after your first inpatient visit). This visit is identical the first inpatient study Visit 1. For this visit, if you received active study drug during your first inpatient visit, you will receive a placebo. If you received the placebo during the first inpatient study Visit 1, then you will receive active study drug during this visit.