1. Department of Internal Medicine; Seoul National University Hospital; Seoul Korea
2. Department of Internal Medicine; Dankook University Hospital; Seoul Korea
3. Department of Internal Medicine; Seoul National University Bundang Hospital; Seoul Korea
4. Department of Internal Medicine; Seoul National University Hospital Healthcare Gangnam Center; Seoul Korea
5. Department of Internal Medicine; Seoul National University College of Medicine; Seoul Korea
6. Department of Pathology; Seoul National University Bundang Hospital; Seoul Korea
7. Department of Radiology; Seoul National University Bundang Hospital; Seoul Korea
8. Department of Internal Medicine; Seoul National University Boramae Medical Center; Seoul Korea