title: Prehospital cardiopulmonary resuscitation. Is it effective?
mesh_terms: D001775:Blood Circulation; D002170:Canada; D004632:Emergency Medical Services / Q000592:standards*; D005069:Evaluation Studies as Topic; D006323:Heart Arrest / Q000401:mortality / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D007055:Iceland; D009664:Norway; D010043:Outcome and Process Assessment, Health Care; D011788:Quality of Life; D012151:Resuscitation; D014481:United States