Small abdominal aortic aneurysms.
D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging / Q000601:surgery*; D001019:Aortic Rupture; D017558:Elective Surgical Procedures / Q000401:mortality; D006801:Humans; D012307:Risk Factors; D014463:Ultrasonography