1. Department of Clinical Immunology, PLA Specialized Research Institute of Rheumatology & Immunology, Xijing Hospital, Fourth Military Medical University , Xi’an, China
2. National Translational Science Center for Molecular Medicine , Xi’an, China
3. Department of Cell Biology, Fourth Military Medical University , Xi’an, China
4. Department of Occupational and Environmental Health, School of Public Health, Fourth Military Medical University , Xi’an, China
5. School of Public Health, University of California , Berkeley, CA, USA