1. Department of Health Policy and Hospital Management, School of Public Health, Harbin Medical University, Harbin, China
2. Department of CT, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang province, China
3. Department of Social Medicine, School of Public Health, Harbin Medical University, Harbin, China
4. Department of Health Management, Harbin Medical University, Harbin, China
5. Health Development Research Center of Heilongjiang Province, Health and Family Planning Commission of Heilongjiang Province, Harbin, China
6. Department of Epidemiology and Biostatistics, School of Public Health, Harbin Medical University, Harbin, China
7. Endocrine and Metabolic Diseases, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China