1. Department of Respiratory and Critical Care Medicine Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University Zhengzhou Henan China
2. Department of Pulmonary and Critical Care Medicine People's Hospital of Zhengzhou University, Henan Provincial People's Hospital Zhengzhou Henan China
3. Academy of Medical Science Zhengzhou University Zhengzhou Henan China