1. Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
2. National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, Jilin 130024, P.R. China
3. Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
4. Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China