Correlation of Serum β2-microglobulin Level with Disease Activity of Systemic Lupus Erythematosus and Degree of Lupus Nephritis 
ZHANG Zongwei,CHEN Cheng,WANG Huiming,DING Guohua
Chinese General Practice . 2019, (17): 2058 -2063 .  DOI: 10.12114/j.issn.1007-9572.2018.00.310