Unmet Needs of Activities of Daily Living and Influencing Factors in the Elderly:a Survey from Medical and Nursing Care Institutions 
WANG Binding,LIU Gang,ZHENG Xinlie,WANG Hang,ZHANG Baolu
Chinese General Practice . 2021, (19): 2465 -2471 .  DOI: 10.12114/j.issn.1007-9572.2021.00.131