- Subjects with a chest x ray taken ≤3 months prior to screening that suggests a diagnosis other than COPD (eg, diagnostic of pneumonia, other infection, atelectasis, or pneumothorax or other active/ongoing pulmonary conditions). If there is no chest x ray taken ≤3 months prior to screening, or if recent results are unavailable for review, a chest x ray must be performed prior to visit 2. Subjects with a medical condition that caused the abnormal finding, but, in the opinion of the Principal Investigator or designee the medical condition could resolve, may be rescreened when the condition is resolved