1. The First Clinical Medical College of Jinan University, Guangzhou, China
2. Department of ICU (Intensive Care Unit), The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
3. Department of Respiratory Medicine, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
4. Emergency Department, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China