From the *Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea; †Department of Internal Medicine, William Beaumont Hospital, Royal Oak, MI; and ‡Division of Infectious Disease, Department of Internal Medicine, and §Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, South Korea.
Author contributions: M.K. and M.S. contributed equally to this study. All authors were involved in drafting the article and critically revising it for important intellectual content, and all authors approved the final version to be published. All authors had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analyses. Study conception and design by M.K., M.S., and J.J.S. Acquisition of data by M.K. and M.S. Analysis and interpretation of data by M.K., M.S., Y.-J.K., Y.G.S., S.-W.L., Y.-B.P., M.-C.P., S.-K.L., and J.J.S.
The authors declare no conflict of interest.
Correspondence: Jason Jungsik Song, MD, FACR, Division of Rheumatology, Yonsei University College of Medicine, 712 Eonjuro, Gangnam-gu, Seoul 135-720, South Korea. E-mail: [email protected].
