1. Department of Periodical Press and National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu Sichuan China
2. Chinese Evidence‐based Medicine Center West China Hospital Sichuan University Chengdu China
3. Mental Health Center West China Hospital Sichuan University Chengdu Sichuan China
4. West China School of Medicine Sichuan University Chengdu China