1. The ACLS Committee of the Korean Association of Cardiopulmonary Resuscitation, Seoul, Korea.
2. Department of Emergency Medicine, Gachon University Gill Hospital, Incheon, Korea.
3. Department of Emergency Medicine, School of Medicine, Ajou University, Suwon, Korea.
4. Department of Emergency Medicine, Wonju College of Medicine, Yonsei University, Wonju, Korea.
5. Division of Cardiology, Department of Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
6. National Emergency Medical Center, Seoul, Korea.
7. Department of Emergency Medicine, School of Medicine, Kyungpook National University, Daegu, Korea.