1. Department of Respiratory and Critical Care Medicine West China Hospital of Sichuan University Chengdu China
2. Chinese Evidence‐Based Medicine Center Cochrane China Center and MAGIC China Center West China Hospital Sichuan University Chengdu China
3. The Center of Gerontology and Geriatrics National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu China
4. School of Rehabilitation Science McMaster University Hamilton Ontario Canada