An interesting air study.
D000368:Aged; D006801:Humans; D008297:Male; D011030:Pneumothorax / Q000000981:diagnostic imaging; D011859:Radiography; D012253:Rib Fractures / Q000150:complications*; D013352:Subcutaneous Emphysema / Q000000981:diagnostic imaging / Q000209:etiology; D013997:Time Factors