Smart Supply Chain Strategy for Promoting Physical Fitness of Elderly People 
QIU Heng,XU Jun,HUANG Chen,LIAO Shengwu,WU Weixuan,JIANG Lijie,LIU Qian
Chinese General Practice . 2021, (10): 1298 -1301 .  DOI: 10.12114/j.issn.1007-9572.2020.00.531