1. Centre for Epidemiology and Evidence-Based Practice, Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
2. Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang, PR China
3. Non-infectious Disease Prevention and Control Institute, Ningbo Municipal Center for Disease Control and Prevention, Ningbo, PR China
4. State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian PR China
5. Department of Pediatrics, School of Medicine, Indiana University, Indianapolis, IN, USA