Unruptured intracranial aneurysms.
D017542:Aneurysm, Ruptured / Q000453:epidemiology; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications / Q000453:epidemiology / Q000601:surgery; D012189:Retrospective Studies; D012307:Risk Factors; D012422:Rupture, Spontaneous; D015983:Selection Bias