1. Department of Respiratory and Critical Care Medical, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
2. Department of Respiratory and Critical Care Medical, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
3. Intensive Care Unit of Shijiazhuang First Hospital, People’s Hospital in Shijiazhuang, Shijiazhuang, Hebei, China
4. Rheumatology and Immunology Department, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China