1 Department of General Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
2 Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
3 Division of Rheumatology/Immunology and Allergy, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.