title: Cooperative study on ruptured aneurysm in Japanese neurosurgical clinics.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D002532:Intracranial Aneurysm / Q000473:pathology / Q000601:surgery*; D007431:Intraoperative Complications / Q000401:mortality; D008875:Middle Aged; D010043:Outcome and Process Assessment, Health Care; D012422:Rupture, Spontaneous; D013997:Time Factors