1. Nursing Director, Neonatal Intensive Care Unit, Samsung Medical Center, Seoul, Korea.
2. Advanced Practice Nurse, Neonatal Intensive Care Unit, Samsung Medical Center, Seoul, Korea.
3. Registered Nurse, Neonatal Intensive Care Unit, Samsung Medical Center, Seoul, Korea.
4. Clinical Associate Professor, Graduate School of Clinical Nursing Science, Sungkyungkwan University, Seoul, Korea.