[1] Catholic Univ Korea, Uijeongbu St Marys Hosp, Dept Internal Med, Seoul, South Korea
[2] Catholic Univ Korea, Uijeongbu St Marys Hosp, Dept Internal Med, Div Rheumatol, Seoul, South Korea
[3] Catholic Univ Korea, Uijeongbu St Marys Hosp, Dept Internal Med, Div Cardiol, Seoul, South Korea
[4] Catholic Univ Korea, Seoul St Marys Hosp, Dept Internal Med, Div Cardiol, Seoul, South Korea
[5] Catholic Univ Korea, Bucheon St Marys Hosp, Dept Neurol, Seoul, South Korea
[6] Catholic Univ Korea, Uijeongbu St Marys Hosp, Coll Med, Dept Internal Med,Div Rheumatol, 271 Cheonbo Ro, Uijongbu 11765, South Korea