Southern Medical University - Guangdong Provincial Key Laboratory of Tropical Disease Research, Beijing Institute of Radiation Medicine - Department of Radiobiology, Southern Medical University - Department of Radiation Oncology, Southern Medical University - Department of Radiation Oncology, Beijing Institute of Radiation Medicine - Department of Radiobiology, Beijing Institute of Radiation Medicine - Department of Radiobiology, Southern Medical University - Department of Radiation Oncology, Southern Medical University - Guangdong Provincial Key Laboratory of Tropical Disease Research, Academy of Military Sciences and Beijing Institute of Radiation Medicine - Department of Radiobiology