title: Subarachnoid haemorrhage and the negative angiogram.
authors.forename: K H
authors.initials: KH
authors.lastname: Ho
mesh_terms: D002533:Cerebral Angiography; D005188:False Negative Reactions; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging; D012846:Singapore; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging*