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We acknowledge the support from National Natural Science Foundation of China (81570472).
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X-lY, DY, and BH declare that they have no conflicts of interest.
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Yuan, Xl., Yang, D. & Hu, B. Endoscopic submucosal dissection for the treatment of synchronous hypopharyngeal mass and esophageal superficial carcinoma. Indian J Gastroenterol 38, 552–553 (2019). https://doi.org/10.1007/s12664-019-00984-1
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DOI: https://doi.org/10.1007/s12664-019-00984-1