1. Department of Psychiatry, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
2. Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Psychiatry, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea.
4. Division of Geriatrics, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
5. Center for Digital Health, Yongin Severance Hospital, Yonsei University Health System, Yongin, Korea.