Policy Responses of Primary Care to Public Health Emergencies:a Policy Tool-based Analysis 
DU Xinyi,XIA Lu,DUAN Yuwei,ZHANG Jianing,LU Jiaying,WU Fang
Chinese General Practice . 2021, (25): 3175 -3183 .  DOI: 10.12114/j.issn.1007-9572.2021.00.248