1 School of Public Health, Inner Mongolia Medical University, Hohhot 010000, Inner Mongolia, China.
2 Department of Critical Care Medicine, Ordos Central Hospital, Ordos 017000, Inner Mongolia, China.
3 School of Public Health, Inner Mongolia Medical University, Hohhot 010000, Inner Mongolia, China;Laboratory for Molecular Epidemiology in Chronic Diseases, Inner Mongolia Medical University, Hohhot 010000, Inner Mongolia, China.
4 Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010000, Inner Mongolia, China.