1. The Institute of Dermatology and Venereology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.
2. Department of Intensive Care Unit, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.
3. Department of Intensive Care Unit, 903 Hospital, Mianyang, China.
4. Department of Health Management & Institute of Health Management, School of Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
5. School of Public Health, Southwest Medical University, Luzhou, China.