Essential Medicine Prescribing Behaviors of Urban General Practitioners in Beijing:a Qualitative Study 
CHEN Xiaolei,SHAO Shuang,WU Ying,XU Xiaojingyuan,ZHANG Tiancheng,DU Juan
Chinese General Practice . 2021, (22): 2814 -2818 .  DOI: 10.12114/j.issn.1007-9572.2021.00.190