1. West China School of Nursing, Sichuan University/Department of Rheumatism and Immunology, West China Hospital, Sichuan University, Chengdu, China
2. West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, China
3. Department of Rheumatism and Immunology, West China Hospital of Sichuan University, Chengdu, Sichuan, China.