Institution: | 1. School of Public Heath, Central South University, Changsha, Hunan Province, P.R. China;2. Department of Radiation Toxicology and Oncology, Beijing Institute of Radiation Medicine, Beijing, P.R. China;3. Institute for Environmental Medicine and Radiation Hygiene, The College of Public Health, University of South China, Hengyang, Hunan Province, P.R. China |