 - Has a serious cardiopulmonary medical condition including cardiovascular disease, congestive heart failure CHF, chronic obstructive pulmonary disease COPD, restrictive lung disease, interstitial lung disease, asthma, acute or chronic bronchitis, cystic fibrosis, pneumonia, tuberculosis, pneumoconiosis, pulmonary hypertension, pulmonary embolism, pleural effusion, pneumothorax, obesity hypoventilation syndrome, neuromuscular lung disease. 