The Journal of Minimally Invasive Surgery :eISSN 2234-5248   pISSN 2234-778X

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Fig. 1. Details of flow charts for study patients. COPD, chronic obstructive pulmonary disease.
Journal of Minimally Invasive Surgery 2021;24:91~97 https://doi.org/10.7602/jmis.2021.24.2.91
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