1. Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
2. Department of Hematology The University of Hong Kong‐Shenzhen Hospital Shenzhen China
3. Department of Respiratory and Critical Care Medicine Peking University People's Hospital Beijing China
4. Department of Nuclear Medicine, Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China