1. Department of Respiratory and Critical Care Medicine, The Second Hospital of Hebei Medical University,
Shijiazhuang, Hebei, 050005, China
2. Department of Respiratory and Critical Care Medicine, Hebei Chest Hospital, Shijiazhuang, Hebei, 050041, China
3. Department of Respiratory and Critical Care Medicine, Hebei Chest Hospital, Shijiazhuang, Hebei, 050041,China
4. Department of Respiratory and Critical Care Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050005, China