Skull X-ray policy.
D000328:Adult; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging; D002648:Child; D006259:Craniocerebral Trauma / Q000000981:diagnostic imaging*; D004630:Emergencies; D004739:England; D006801:Humans; D008297:Male; D011859:Radiography; D012886:Skull / Q000000981:diagnostic imaging*