title: Emergency witnesses.
authors.forename: R
authors.initials: R
authors.lastname: Porter
mesh_terms: D005190:Family / Q000523:psychology*; D006801:Humans; D016134:Organizational Policy; D012151:Resuscitation; D012956:Societies, Nursing; D006113:United Kingdom; D014789:Visitors to Patients / Q000523:psychology*