LetterLetter
Extraarticular Manifestations and Comorbidities in Patients With Rheumatoid Arthritis
Pei-Yu Liao, Shin-Liang Liao and Yung-Po Liaw
The Journal of Rheumatology April 2022, jrheum.211278; DOI: https://doi.org/10.3899/jrheum.211278
Pei-Yu Liao
School of Medicine, Chung Shan Medical University, Taichung City; Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City; Department of Public Health and Institute of Public Health, and Department of Medical Imaging, Chung Shan Medical University Hospital, Taichung City, Taiwan. PYL and SLL contributed equally to this article. The authors declare no conflicts of interest relevant to this article. Address correspondence to Dr. Y.P. Liaw, Department of Public Health and Institute of Public Health, Chung Shan Medical University, and Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Sec. 1, Jianguo N. Rd., South District, Taichung City 40201, Taiwan. Email: liawyp@csmu.edu.tw.
Shin-Liang Liao
School of Medicine, Chung Shan Medical University, Taichung City; Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City; Department of Public Health and Institute of Public Health, and Department of Medical Imaging, Chung Shan Medical University Hospital, Taichung City, Taiwan. PYL and SLL contributed equally to this article. The authors declare no conflicts of interest relevant to this article. Address correspondence to Dr. Y.P. Liaw, Department of Public Health and Institute of Public Health, Chung Shan Medical University, and Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Sec. 1, Jianguo N. Rd., South District, Taichung City 40201, Taiwan. Email: liawyp@csmu.edu.tw.
Yung-Po Liaw
School of Medicine, Chung Shan Medical University, Taichung City; Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City; Department of Public Health and Institute of Public Health, and Department of Medical Imaging, Chung Shan Medical University Hospital, Taichung City, Taiwan. PYL and SLL contributed equally to this article. The authors declare no conflicts of interest relevant to this article. Address correspondence to Dr. Y.P. Liaw, Department of Public Health and Institute of Public Health, Chung Shan Medical University, and Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Sec. 1, Jianguo N. Rd., South District, Taichung City 40201, Taiwan. Email: liawyp@csmu.edu.tw.

Abstract
We read with great interest the article by Gunderson et al, which reported the multimorbidity burden in rheumatoid arthritis (RA).1 We appreciate that the authors estimated comorbidities in RA with a novel perspective, thus giving us a chance to further clarify the RA patient complexity. We would like, however, to discuss some key points.
In this issue
The Journal of Rheumatology
Vol. 49, Issue 5
1 May 2022
Extraarticular Manifestations and Comorbidities in Patients With Rheumatoid Arthritis
Pei-Yu Liao, Shin-Liang Liao, Yung-Po Liaw
The Journal of Rheumatology Apr 2022, jrheum.211278; DOI: 10.3899/jrheum.211278