- Subjects with a chest x-ray/CT scan that suggests a diagnosis other than COPD (eg, pneumonia, other infection, atelectasis, or pneumothorax or other active/ongoing pulmonary conditions) and taken within 6 months prior to study start. If there is no chest x-ray or CT scan taken within 6 months prior to study start, or if recent results are unavailable for review, a chest x-ray must be performed.