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Chinese
老年肺栓塞早期诊断延误的影响因素研究
徐琪1，周瑞清2，王红旗3，孙良4，万俊峰4
Chinese General Practice . 2018, (
7
): 804 -808 . DOI: 10.3969/j.issn.1007-9572.2018.07.010
