1. The ladder diagram(a100+year history) [J];Johnson;Am J Cardiol,2008
2. The application of CBS combined with PBL teaching model in the teaching ward round of Cardiology;Dong;China High Med Educ,2013
3. Practice and evaluation of ladder assisted arrhythmia teaching [j];Xu;Health Vocat Educ,2012
4. Application of ladder combined with CBS in ECG diagnosis arrhythmia teaching [j];Sun;Health Vocat Educ,2016