1. Department of Pathology, Tianjin Union Medicine Center, Tianjin 300121, China
2. Department of General Surgery, Tianjin Union Medicine Center, Tianjin 300121, China
3. Department of Gynaecology and Obstetrics, Tianjin Union Medicine Center, Tianjin 300121, China
4. Department of Medical Imaging, Tianjin Union Medicine Center, Tianjin 300121, China