[Heart arrest: the survival chain is not stronger than the weakest link].
Christensen
Erika Frischknecht
EF
D016887:Cardiopulmonary Resuscitation; D003718:Denmark / Q000453:epidemiology; D004632:Emergency Medical Services / Q000592:standards; D006323:Heart Arrest / Q000401:mortality* / Q000628:therapy; D006801:Humans; D011785:Quality Assurance, Health Care