From the Department of Emergency Medicine (Z.Z., J.L., L.Z., H.T., H.L., Z.L., H.Z., Z.Y., Y.X.), the First Affiliated Hospital, Sun Yat-sen University; and Department of Rheumatology, Guangzhou First People’s Hospital (S.Y.), School of Medicine, South China University of Technology, Guangzhou, Guangdong, China.

Correspondence to: Shiwen Yuan, MD, Department of Rheumatology, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, No. 1, Panfu Road, Guangzhou, Guangdong, China, 510180 (e-mail: [email protected]); Yan Xiong, MD, PhD, Department of Emergency Medicine, the First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhongshan 2nd Road, Guangzhou, Guangdong, China, 510080 (e-mail: [email protected]); and Zhen Yang, MD, PhD, Department of Emergency Medicine, the First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhongshan 2nd Road, Guangzhou, Guangdong, China, 510080 (e-mail: [email protected]).

The authors declare no conflict of interest.

Z.Z., J.L., and L.Z. contributed equally to the work.