1. Department of Immunology, College of Basic Medical Science, Jilin University, Changchun, Jilin 130021, P.R. China
2. Department of Obstetrics and Gynecology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
3. Department of Infections, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
4. Department of Pathology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
5. Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China