Institute of Radiation Medicine, Academy of Military Medical Science, Beijing 100850, China;
Chongqing Maternal and Child Health-Care Hospital, Chongqing 400016, China;
Institute of Radiation Medicine, Academy of Military Medical Science, Beijing 100850, China;
Institute of Radiation Medicine, Academy of Military Medical Science, Beijing 100850, China;
Institute of Radiation Medicine, Academy of Military Medical Science, Beijing 100850, China;
Institute of Radiation Medicine, Academy of Military Medical Science, Beijing 100850, China;
Institute of Radiation Medicine, Academy of Military Medical Science, Beijing 100850, China;
Institute of Radiation Medicine, Academy of Military Medical Science, Beijing 100850, China;