title: Defining the natural history of unruptured aneurysms.
authors.affiliation: Department of Neurosurgery, Cleveland Clinic Foundation, 9500 Euclid Avenue, S80, Cleveland, Ohio 44195, USA.
authors.forename: Peter A
authors.initials: PA
authors.lastname: Rasmussen
authors.forename: Marc R
authors.initials: MR
authors.lastname: Mayberg
mesh_terms: D002543:Cerebral Hemorrhage / Q000209:etiology* / Q000517:prevention & control* / Q000601:surgery; D015331:Cohort Studies; D018450:Disease Progression; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy; D015337:Multicenter Studies as Topic / Q000706:statistics & numerical data; D018579:Patient Selection; D011379:Prognosis; D011446:Prospective Studies; D012189:Retrospective Studies; D018570:Risk Assessment; D016896:Treatment Outcome