1. Department of Internal Medicine, Inha University Hospital, Inha University School of Medicine, Incheon 22332, Korea.
2. Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon 21431, Korea.
3. Department of Internal Medicine, Seoul National University Hospital, Seoul National University School of Medicine, Seoul 03080, Korea.
4. Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea.
5. Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul 06591, Korea.
6. Translational Research Center, Inha University School of Medicine and SCM Lifescience Co., Ltd., Incheon 22332, Korea.