Long term effects of ejecting from aircraft.
D000060:Accidents, Aviation; D000401:Aircraft; D000844:Ankylosis / Q000000981:diagnostic imaging / Q000209:etiology; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D006801:Humans; D011859:Radiography; D013124:Spinal Injuries / Q000453:epidemiology / Q000209:etiology; D013997:Time Factors; D014947:Wounds and Injuries / Q000453:epidemiology