Affiliation: | (1) Department of Rheumatology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, PR China;(2) Division of Rheumatology, David Geffen School of Medicine at UCLA, 1000 Veteran Avenue, Los Angeles, CA 90095-1670, USA |