[1
]
Department of Internal Medicine, Soonchunhyang University Hospital, Bucheon, South
Korea.
[2
]
Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University
of Ulsan College of Medicine, Seoul, South Korea.
[3
]
Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul,
South Korea.
[4
]
Department of Rheumatology, Chonnam National University Medical School and Hospital,
Gwangju, South Korea.
[5
]
Division of Rheumatology, Department of Internal Medicine, Yonsei University College
of Medicine, Seoul, South Korea.
[6
]
Department of Internal Medicine, Gil Medical Center, Gachon University College of
Medicine, Incheon, South Korea.
[7
]
Division of Rheumatology, Department of Internal Medicine, Seoul Metropolitan Government-Seoul
National University Boramae Medical Center, Seoul, South Korea.
[8
]
Division of Rheumatology, Department of Internal Medicine, Kyung Hee University, College
of Medicine, Kyung Hee University Hospital at Gangdong, Seoul, South Korea.
[9
]
Division of Rheumatology, Department of Internal Medicine, Kyung Hee University Medical
Center, Seoul, South Korea.
[10
]
Division of Rheumatology, Department of Internal Medicine, Seoul National University
Hospital, Seoul, South Korea.
[11
]
Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of
Medicine, Seoul, South Korea.