1. School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China
2. Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, China
3. Institute of Space Life Sciences, Soochow University, Suzhou, China
4. Department of Space Radiobiology, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China
5. Research Center for Charged Particle Therapy, National Institutes for Quanturn and Radiological Science and Technology, Chiba, Japan
6. Center for Radiological Research, College of Physician and Surgeons, Columbia University, New York, NY, USA