1. MOE Key Lab of Environment and Health, School of Public Health; Tongji Medical College; Huazhong University of Science & Technology; Wuhan; Hubei; China
2. State Key Laboratory of Molecular Oncology, Cancer Institute & Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing; China
3. Dongfeng Central Hospital; Dongfeng Motor Corporation and Hubei University of Medicine; Shiyan; Hubei; China
4. Departments of Nutrition and Epidemiology; Harvard School of Public Health; Boston; Massachusetts