1. School of Public Health, Guangxi Medical University, Nanning, People’s Republic of China
2. School of Public Health, Guilin Medical University, Guilin, People’s Republic of China
3. School of Public Health, Baotou Medical College, Baotou, People’s Republic of China
4. Vanderbilt Institute for Global Health, Vanderbilt University Medical Center, Nashville, TN, USA
5. State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
6. Department of Health Behavior and Health Education, School of Public Health, University of Michigan, Ann Arbor, MI, USA
7. Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, TN, USA