1. Full-time Lecturer, College of Nursing, Eulji University, Seongnam, Korea.
2. Associate Professor, Department of Emergency Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
3. CPR Education Center, Konkuk University Medical Center, Seoul, Korea.
4. Assistant Professor, Red Cross College of Nursing, Chung-Ang University, Seoul, Korea.