1. Department of Health Management Center, the First Hospital of Jilin University, Jilin University, Changchun, Jilin, 130021, China
2. Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
3. Department of Epidemiology and Statistics, School of Public Health, Xinjiang Medical University, Urumqi, 830011, China
4. Department of Hospital Infection Management, Zhengzhou People’s Hospital, Zhengzhou, Henan, 450000, China