1. Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, Department of Hygiene Toxicology, College of Preventive Medicine, Third Military Medical University , Chongqing , China
2. Department of Occupational Health , School of Public Health, , Taiyuan , China
3. Shanxi Medical University , School of Public Health, , Taiyuan , China
4. Department of Pediatrics, Tongren Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , China