1. Department of Radiation Medicine, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China;
2. Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, China;
3. University of Chinese Academy of Sciences, Beijing, China;
4. School of Pharmacy, Lanzhou University, Lanzhou, China;
5. College of Chemical Engineering, Northwest Minzu University, Lanzhou, China;
6. Medical College of Northwest Minzu University, Lanzhou, China