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1 Department of Rheumatology and Immunology, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China.
2 Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, Portland, OR, 97239, USA; Rheumatology Section, VA Portland Health Care System, Portland, OR, 97239, USA. Electronic address: chuc@ohsu.edu.
1 Department of Rheumatology and Immunology, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China.
2 Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, Portland, OR, 97239, USA; Rheumatology Section, VA Portland Health Care System, Portland, OR, 97239, USA. Electronic address: chuc@ohsu.edu.