1. Department of Oncology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
2. Department of Gastrointestinal Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
3. Sichuan Provincial Center for Gynecology and Breast Diseases (Gynecology), Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
4. Department of Pathology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
5. Department of Radiology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
6. Department of Nuclear Medicine, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China