title: Advancing cardiac resuscitation: lessons from externally controlled trials.
authors: C M
authors: CM
authors: Olson
authors: P B
authors: PB
authors: Fontanarosa
mesh_terms: D016887:Cardiopulmonary Resuscitation; D002986:Clinical Trials as Topic; D004554:Electric Countershock; D004632:Emergency Medical Services; D006323:Heart Arrest / Q000628:therapy*; D006801:Humans