1. Department of Internal Medicine Seoul National University Hospital Seoul Korea
2. Department of Internal Medicine Seoul National University College of Medicine Seoul Korea
3. Department of Internal Medicine Seoul National University Bundang Hospital Seongnam Korea
4. Department of Family Medicine Seoul National University Hospital Seoul Korea
5. Department of Family Medicine Chuncheon Sacred Heart Hospital Chuncheon Korea
6. Department of Internal Medicine Korea University Guro Hospital Seoul Korea
7. Department of Family Medicine Jeju National University Hospital Jeju Korea
8. Department of Physical & Rehabilitation Medicine Chonnam National University Hospital Gwangju Korea
9. Department of Psychiatry Gyeongsang National University Hospital Jinju Korea
10. Department of Biomedical Science and Technology Kyung Hee University Seoul Korea
11. Department of Family Medicine Kyung Hee University Hospital Seoul Korea