1. Institute of Quantitative Biology, Department of Physics, Zhejiang University, Hangzhou 310027, China
2. Computational Biology Center, IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598, United States
3. State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Centre of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China