[1] Peking Union Medical College Hospital,Department of Respiratory Medicine
[2] Chinese Academy of Medical Sciences & Peking Union Medical College,Office for Infection Control
[3] Peking Union Medical College Hospital,Department of Pathology
[4] Chinese Academy of Medical Sciences & Peking Union Medical College,undefined
[5] Peking Union Medical College Hospital,undefined
[6] Chinese Academy of Medical Sciences & Peking Union Medical College,undefined