1. Panchal AR, Bartos JA, Cabanas JG, et al. Part 3: adult basic and advanced life support: 2020 American Heart Association Guidelines for Cardiopulmonary Resuscitation and EmergencyCardiovascular Care. Circulation, 2020, 142(16_suppl_2): S366-S468
2. Riva G, Ringh M, Jonsson M, et al. Survival in out-of-hospital cardiac arrest after standard cardiopulmonary resuscitation or chest compressions only before arrival of emergency medical services: nationwide study during three guideline periods[J]. Circulation, 2019, 139(23): 2600-2609
3. Riddersholm S, Kragholm K, Mortensen RN, et al. Association of bystander interventions and hospital length of stay and admission to intensive care unit in out-of-hospital cardiac arrest survivors[J]. Resuscitation, 2017, 119: 99-106