1. Professor, College of Nursing, Research Institute of Nursing Science, Seoul National University, Korea.
2. Assistant Professor, Department of Nursing, Yeungnam University College, Korea.
3. Associate Professor, College of Nursing, Research Institute of Nursing Science, Seoul National University, Korea.
4. Professor, College of Nursing, Kangwon National University, Korea.
5. Director, Seoul National University Hospital, Korea.
6. Professor, Department of Clinical Epidemiology and Biostatistics, College of Medicine, University of Ulsan, Asan Medical Center, Korea.