1. Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine , 81, Irwon-ro, Gangnam-gu, Seoul 06351 , Korea
2. Chosun University Hospital, University of Chosun College of Medicine , 365 Pilmun-daero, Dong-gu, Gwangju 61453 , Korea
3. Seoul St. Mary's Hospital, The Catholic University of Korea , 222 Banpo-daero, Seocho-gu, Seoul 06591 , Korea
4. Uijeongbu St. Mary's Hospital, The Catholic University of Korea , 271 Cheonbo-ro, Uijeongbu, Gyeonggi-do 11765 , Korea
5. Department of Internal Medicine, Chonnam National University Hospital , 42 Jebong-ro, Dong-gu, Gwangju 61469 , Korea
6. Department of Internal Medicine, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine , 20 Ilsan-ro, Wonju, Gangwon-do 26426 , Korea
7. Department of Internal Medicine, Inje University Ilsan Paik Hospital , 170 Juhwa-ro, Ilsanseo-gu, Goyang, Gyeonggi-do 10380 , Korea
8. Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine , 776 Sunhawn-ro, Cheongju, Chungcheongbuk-do 28644 , Korea
9. Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine , 501 Iljik-dong, Gwangmyeong, Gyeonggi-do 14353 , Korea
10. Inha University Hospital , 27 Inhang-ro, Jung-gu, Incheon 22332 , Korea
11. Department of Internal Medicine, Sejong General Hospital , 20 Gyeyangmunhwa-ro, Gyeyang-gu, Incheon 21080 , Korea
12. Department of Internal Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine , 501 Jinju-daero, Jinju, Gyeongsangnam-do 52727 , Korea
13. Keimyung University Dongsan Medical Center , 1035 Dalgubeol-daero, Dalseo-gu, Daegu 42601 , Korea
14. Department of Internal Medicine, Seoul National University Hospital , 101, Daehak-ro, Jongno-gu, Seoul 03080 , Korea
15. Department of Internal Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine , Baengnyeong-ro 156, Chuncheon, Gangwon-do 24289 , Korea
16. Department of Internal Medicine, Wonkwang University Hospital , 895 Muwang-ro, Iksan, Jeollabuk-do 54538 , Korea
17. Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine , 81, Irwon-ro, Gangnam-guw, Seoul 06351 , Korea