教育部在线教育研究基金 2016 年度立项课题2016YB127;中国医科大学"十三五"第二批医学教育科学研究课题YDJK2018011 The 2016 annual project of the online education research fund of the Ministry of Education2016YB127;The second batch of "13th Five-Year" education science research project of China Medical UniversityYDJK2018011