1. Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
2. Department of Internal Medicine, Konyang University College of Medicine, Daejeon, Korea.
3. Department of Internal Medicine, Eulji University School of Medicine, Daejeon, Korea.
4. Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, Korea.
5. Department of Internal Medicine, Eulji University School of Medicine, Seoul, Korea.
6. Department of Internal Medicine, Inje University College of Medicine, Busan, Korea.
7. Department of Internal Medicine, The Catholic University of Korea College of Medicine, Seoul, Korea.
8. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
9. Department of Internal Medicine, Inha University School of Medicine, Incheon, Korea.
10. Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea.
11. Department of Internal Medicine, University of Ulsan College of Medicine, Ulsan, Korea.
12. Department of Internal Medicine, Hongik Hospital, Seoul, Korea.
13. Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea.
14. Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea.
15. Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
16. Novo Nordisk Pharma Korea, Seoul, Korea.