1 Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital The Eighth Medical Center, Chinese PLA General Hospital, Beijing 100093, China.
2 Department of the First Internal Medicine, The Hubei Armed Police Corps Hospital, Wuhan, Hubei 430061, China.
3 Department of Pulmonary and Critical Care Medicine, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China.
4 Department of Health Management, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China.
5 Division of Pediatric Immunology, Allergy and Rheumatology, Joe DiMaggio Children's Hospital, Hollywood, FL 33021, USA.
6 Division of Rheumatology, Allergy and Clinical Immunology, University of California, Davis, Davis, CA 95616, USA.