1. Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou, People's Republic of China
2. Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang, People's Republic of China
3. School of Public Health, Xinxiang Medical University, Xinxiang, People's Republic of China
4. The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China