1. Department of Epidemiology and Health Statistics College of Public Health Zhengzhou University Zhengzhou China
2. Department of Preventive Medicine Shenzhen University School of Medicine Shenzhen China
3. Department of Prevention and Health Care Military Hospital of Henan Province Zhengzhou China
4. The Jockey Club School of Public Health and Primary Care The Chinese University of Hong Kong Hong Kong China
5. Department of Clinical Medicine Shenzhen University School of Medicine Shenzhen China
6. Department of Preventive Medicine School of Public Health Guiyang Medical University Guiyang China