1 Department of Pulmonary and Critical Care Medicine, Beijing Hospital, National Gerontology Center, Institute of Gerontology, Chinese Academy of Medical Sciences Beijing, China.
2 Department of Elderly Health Management, Shenzhen Center for Chronic Disease Control, Shenzhen, China.
3 School of Population Medicine and Public Health, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
4 State Key Laboratory of Respiratory Health and Multimorbidity, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
5 Department of Geriatrics, National Clinical Research Center for Geriatrics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China [email protected].