1. National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, P.R. China
2. Department of Gastroenterology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
3. Institute of Biophysics, The Chinese Academy of Sciences, Beijing 100101, P.R. China
4. Biomedical Engineering School and Foundation Medical School, Capital Medical University, Beijing 100069, P.R. China
5. Department of Radiation Toxicology and Oncology, Beijing Institute of Radiation Medicine, Beijing 100850, P.R. China
6. Department of Gynecological Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, P.R. China
7. Department of Gynecology, Liaoning Cancer Hospital and Cancer Hospital of China Medical University, Shenyang, Liaoning 110042, P.R. China