1. Department of Epidemiology and Biostatistics, University of Georgia College of Public Health, Athens
2. Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana
3. Ningbo Municipal Center for Disease Control and Prevention, Ningbo, China
4. Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
5. Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California
6. Hangzhou Municipal Center for Disease Control and Prevention, Hangzhou, China
7. Health Informatics Institute, University of Georgia College of Public Health, Athens
8. Center for the Ecology of Infectious Diseases, University of Georgia, Athens
9. Renmin University of China School of Statistics, Beijing, China
10. Statistical Consulting Center, Renmin University of China, Beijing, China
11. Haishu Center for Disease Control and Prevention, Ningbo, China
12. Department of Health Care Administration, California State University Long Beach, College of Health and Human Services, Long Beach
13. Department of Clinical Epidemiology and Tobacco Dependence Treatment Research, Beijing Chaoyang Hospital, Beijing, China
14. Center for Applied Statistics, Renmin University of China, Beijing, China