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. 2022 Nov 9;14(1):52–60. doi: 10.1111/1759-7714.14711

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© 2022 The Authors. Thoracic Cancer published by China Lung Oncology Group and John Wiley & Sons Australia, Ltd.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Consolidated standards of reporting trials (CONSORT) diagram. DPP4 i, DPP4 inhibitor; ICI, immune checkpoint inhibitor; LCNEC, large cell neuroendocrine carcinoma; NSCLC, non‐small cell lung cancer; SCLC, small cell lung cancer.