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. 2020 Jul 7;12:5515–5525. doi: 10.2147/CMAR.S242800

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© 2020 Huang et al.

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Cumulative incidence of pulmonary metastasis in the tracheal intubation group and tracheotomy group. A log rank test was used to analyze the effect of tracheal intubation for pulmonary metastasis in patients undergoing laryngectomy. Comparison of survival curves of two groups showed that there is no significant difference in pulmonary metastasis (P > 0.05).