1. Department of Gynecology and Obstetrics, The China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130000, P.R. China
2. Department of Anesthesiology, The China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130000, P.R. China
3. Department of Dermatology, The China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130000, P.R. China