1. Department of Human Anatomy, Baotou Medical College, Inner Mongolia, China
2. Graduate School, Baotou Medical College, Inner Mongolia, China
3. The Inner Mongolia Autonomous Region Key Laboratory of disease-related biomarkers, Institute of Molecular Medicine, Baotou Medical College, Inner Mongolia, China
4. The Second Affiliated Hospital, Baotou Medical College, Inner Mongolia, China
5. School of Public Health, Peking University, Beijing, China
6. School of Public Health, Baotou Medical College, Inner Mongolia, China
7. School of Health Sciences, University of Newcastle, Newcastle, Australia