A, ACQUIRED, BACTERIAL, BACTERIAN, BSIP, BY, CAUSED, CAVALLINI, CHEST, EXAMINATION, FRONTAL, HOSPITAL, HOSPITAL-ACQUIRED, HUMAN, IMAGERY, INFECTION, JAMES, LUNG, MEDICAL, MEDICINE, ON, PNEUMOLOGY, PNEUMONIA, PNEUMONOPATHY, PULMONARY, RADIOGRAPHY, RESPIRATORY, RESULT, SCIENTIFIC, SEEN, SYSTEM, THORAX, X-RAY,