1. Department of Statistics and Epidemiology; Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment; The School of Public Health; Sun Yat-sen University Guangzhou China
2. Division of Epidemiology; Department of Medicine; Vanderbilt University School of Medicine; Nashville Tennessee
3. The First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
4. The Second Affiliated Hospital; Sun Yat-sen University; Guangzhou China
5. The Sun Yat-sen University Cancer Center; Guangzhou China
6. The Third Affiliated Hospital; Sun Yat-sen University; Guangzhou China