Associated Factors for Choice of Medical Institutions for Treatment in Chronic Disease Patients during the Implementation of Hierarchical Medical System:a Survey in Xuzhou 
LI Haiyang,JIANG Jinxing,ZHAO Qiyu,JIANG Jia
Chinese General Practice . 2020, (12): 1546 -1551 .  DOI: 10.12114/j.issn.1007-9572.2020.00.036