From the *School of Medicine, National Yang-Ming University; †Department of Medicine and ‡Division of Allergy, Immunology, Rheumatology, Department of Medicine, Taipei Veterans General Hospital; and §Department of Internal Medicine, Taipei City Hospital, Heping Fuyou Branch, Taipei, Taiwan.
The authors declare no conflict of interest.
Correspondence: Wei-Sheng Chen, MD, Division of Allergy, Immunology, Rheumatology, Department of Medicine, Taipei Veterans General Hospital, No 201, Sec. 2, Shipai Rd, Beitou District, Taipei City, Taiwan 11217, ROC. E-mail: firstname.lastname@example.org.