[1] Catholic Univ, Uijeongbu St Marys Hosp, Div Rheumatol, Dept Internal Med, Euijeongbu, South Korea
[2] Catholic Univ Korea, Seoul St Marys Hosp, Div Rheumatol, Dept Internal Med, Seoul, South Korea
[3] Catholic Univ Korea, Yeouido St Marys Hosp, Div Rheumatol, Dept Internal Med, Seoul, South Korea
[4] Catholic Univ Korea, Bucheon St Marys Hosp, Pulm Allergy & Crit Care Med, Bucheon, South Korea
[5] Catholic Univ Korea, Bucheon St Marys Hosp, Div Rheumatol, Dept Internal Med, Bucheon, South Korea