1. Department of General Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Hangzhou China
2. Department of Gynaecology and Obstetrics; Women's Hospital; School of Medicine; Zhejiang University; Hangzhou China
3. Department of Medical Microbiology and Molecular Biology; Women's Hospital; School of Medicine; Zhejiang University; Hangzhou China
4. Department of Immunology and Biochemistry; Women's Hospital; School of Medicine; Zhejiang University; Hangzhou China
5. Department of Pathology; Women's Hospital; School of Medicine; Zhejiang University; Hangzhou China