1. Closed-chest cardiac massage;Kouwenhoven;JAMA,1960
2. Survival of out-of-hospital cardiac arrest with early initiation of cardiopulmonary resuscitation;Cummins;Am J Emerg Med,1985
3. 3. Kleinman ME. 2017 American Heart Association Focused Update on Adult Basic Life Support and Cardiopulmonary Resuscitation Quality: An Update to the American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Available from: https://pubmed.ncbi.nlm.nih.gov/?term=American+Heart+Association+Focused +Update+On+Adult+Basic+Life+Support+and+Cardiopulmonary +Resuscitation+Quality
4. 4. 2015 AHA Guidelines Update For Cardiopulmonary Resuscitation (CPR) and Emergency Cardiovascular Care (ECC) Science. Available from: https://www.cercp.org/wp-content/uploads/2015/10/Guidelines-RCP-AHA-2015-Full.pdf
5. 5. Libby C, Skinner RB, Rawal AR. EMS Termination Of Resuscitation And Pronouncement of Death. Treasure Island: StatPearls Publishing; 2019.