1. Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University , Qingdao, China
2. Institute of Metabolic Diseases, Qingdao University , Qingdao, China
3. Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
4. Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham , Birmingham, AL, USA
5. Department of Medicine, University of Auckland , Auckland, New Zealand
6. Department of Clinical Laboratory, the Affiliated Hospital of Qingdao University , Qingdao, China