大连医科大学教学改革研究项目DYZD17003;辽宁省教育科学"十三五"规划2018年度课题JG18DB123;大连市社科联(院)2017-2018年度课题2017dlskzd090;Dalian Medical University Teaching Reform Research Key ProjectDYZD17003;The 2018 Project of the 13th Five-Year Plan for Education Science in Liaoning ProvinceJG18DB123;Dalian Federation Social Science Circles Institution 2017-2018 Project2017dlskzd090