Day 180: Clinic Visit. At this visit vital signs, C-SSRS test, interim history, adverse event assessment, vital status, and exacerbation history will be recorded. A spirometry test will be performed as well during this visit. The following questionnaires will given: EQ-5D, the St. George's Respiratory Questionnaire (SGRQ), and the Modified Medical Research Council dyspnea score (MMRC).