Chinese Journal of Medical Education ›› 2019, Vol. 39 ›› Issue (12): 958-961.DOI: 10.3760/cma.j.issn.1673-677X.2019.12.016
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Chen Li1, Du Zhiqin2, Liu Zhenhua3, Liu Zhenhong3, Wu Yajun3, Xu Qiang3, Zhang Yingjie4, Liu Junli1