1. Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China
2. Department of Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China
3. Department of Critical Care Medicine, Haikou Municipal People’s Hospital and Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou, Hainan, China
4. Department of Respiratory Medicine, Hospital of Chengdu Office of People’s Government of Tibetan autonomous Region, Chengdu, Sichuan, China