title: Whither the fourth link?
authors.forename: David C
authors.initials: DC
authors.lastname: Cone
mesh_terms: D016887:Cardiopulmonary Resuscitation / Q000592:standards*; D004554:Electric Countershock / Q000592:standards; D004632:Emergency Medical Services / Q000592:standards*; D006323:Heart Arrest / Q000628:therapy; D006801:Humans; D017063:Outcome Assessment, Health Care; D016414:Resuscitation Orders