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S U P P O R T I N G I N FO R M AT I O N
Additional supporting information may be found online in the
Supporting Information section.
How to cite this article: Koga N, Hu Q, Sakai A, et al. Clinical
significance of signal regulatory protein alpha (SIRPα)
expression in esophageal squamous cell carcinoma. Cancer
Sci. 2021;112:3018–3028. https://doi.org/10.1111/cas.14971
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