Department of Epidemiology and Biostatistics;
College of Public Health;
Zhengzhou University;
Zhengzhou 450000;
Henan;
China;
Department of Preventive Medicine;
Shenzhen University;
Shenzhen University Health Science Center;
Shenzhen 528060;
Guangdong;
China;
Discipline of Public Health and Preventive Medicine;
Center of Preventive Medicine Research and Assessment;
Henan University of Traditional Chinese Medicine;
Zhengzhou 450016;
Henan;
China;
Department of Prevention and Health Care;
Military Hospital of Henan Province;
Zhengzhou 450052;
Henan;
China;