title: UNEXPLAINED UNDERVENTILATION OF THE LUNGS.
mesh_terms: D001049:Apnea; D001991:Bronchitis; D006332:Cardiomegaly; D003128:Coma; D006331:Heart Diseases; D006333:Heart Failure; D006801:Humans; D008171:Lung Diseases; D009765:Obesity; D011086:Polycythemia; D011656:Pulmonary Emphysema; D011660:Pulmonary Heart Disease; D013902:Radiography, Thoracic; D012129:Respiratory Function Tests; D012131:Respiratory Insufficiency
keywords: APNEA; BRONCHITIS; COMA; HEART DISEASES; HEART ENLARGEMENT; HEART FAILURE, CONGESTIVE; LUNG DISEASES; OBESITY; POLYCYTHEMIA; PULMONARY EMPHYSEMA; PULMONARY HEART DISEASE; RESPIRATORY FUNCTION TESTS; RESPIRATORY INSUFFICIENCY; THORACIC RADIOGRAPHY