1. Department of Internal Medicine, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Korea
2. Department of Rehabilitation Medicine, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Korea
3. Department of Neuropsychiatry, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Korea
4. Department of Brain and Cognitive Science, Seoul National University College of Natural Sciences, Korea
5. Department of Internal Medicine, Seoul National University Hospital and Seoul National University College of Medicine, Korea