1. Assistant Director, Department of Nursing, Seoul National University Bundang Hospital, Bundang, South Korea.
2. Professor, Geriatric Center, Seoul National University Bundang Hospital & Department of Internal Medicine, Seoul National University College of Medicine, Bundang, South Korea.
3. Associate Professor, Geriatric Center, Seoul National University Bundang Hospital & Department of Internal Medicine, Seoul National University College of Medicine, Bundang, South Korea.
4. Coordinator, Geriatric Center, Seoul National University Bundang Hospital, Bundang, South Korea.
5. Associate Professor, College of Nursing & The Research Institute of Nurisng Science, Seoul National University, Seoul, South Korea.