1. Medical Intensive Care Unit, Department of Respiratory and Critical Care Medicine The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou China
2. Department of Respiratory and Critical Care Medicine Institute of Respiratory Diseases of Sun Yat‐Sen University Guangzhou China
3. Department of Emergency The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou China
4. Department of Pathology The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou China