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Zhang, Yanqi, Liang Zhou, Xiaoyu Liu, Ling Liu, Yazhou Wu, Zengwei Zhao, Dali Yi, and Dong Yi. "The Effectiveness of the Problem-Based Learning Teaching Model for Use in Introductory Chinese Undergraduate Medical Courses: A Systematic Review and Meta-Analysis." PLoS One 2015.

Zhang, Yanqi, et al. "The Effectiveness of the Problem-Based Learning Teaching Model for Use in Introductory Chinese Undergraduate Medical Courses: A Systematic Review and Meta-Analysis." PLoS One 2015.