1. State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
2. Medical College of Soochow University, Suzhou 215123, China
3. Department of Basic Medical Sciences for Radiation Damages, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
4. Center for Radiological Research, College of Physician and Surgeons, Columbia University, New York, NY 10032, USA