Unruptured intracranial aneurysms.
D000367:Age Factors; D017542:Aneurysm, Ruptured / Q000453:epidemiology*; D015982:Bias; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications / Q000601:surgery*; D012422:Rupture, Spontaneous / Q000453:epidemiology; D014656:Vascular Surgical Procedures / Q000009:adverse effects* / Q000401:mortality