1. Department of Gynaecology, Hangzhou Women’s Hospital, Hangzhou city, China
2. Department of Radiology, Taizhou First People’s Hospital, Taizhou, China
3. Department of Gynaecology, Taizhou First People’s Hospital, Taizhou, China
4. Yuanqiao Central Health Center, Huangyan District, Taizhou City, China.