1. Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.
2. Department of Medicine, The Penn State University Hershey Medical Center, Hershey, PA 17033, USA.
3. Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA.
4. Department of Internal Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China.
5. Department of Immunology, Institute of Biochemistry at Chinese Academy of Science, Shanghai 200031, China.