Use of Essential Medicines for Diabetes in Different Levels of Hospitals during the Implementation of Hierarchical Medical System 
ZHANG Xiaomin,CHEN Xiang,CHEN Jiang,BAO Yuyan,YE Aiju,HONG Bing
Chinese General Practice . 2021, (12): 1546 -1551 .  DOI: 10.12114/j.issn.1007-9572.2021.00.028