Frailty Prevalence and Its Correlation with Cognitive Function in Hospitalized Patients Over 60 Years Old 
YANG Yanrong,WANG Ziqi,LI Zheng,FU Liangxiu,HU Tingting
Chinese General Practice . 2020, (17): 2132 -2136 .  DOI: 10.12114/j.issn.1007-9572.2020.00.128