1. Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong Province, China
2. Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
3. Department of Gynaecology and Obstetrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
4. Department of Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong Province, China