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Dr. Meng-Si Luo drafted the letter, and Dr. Guan-Jiang Huang revised the letter.
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Luo, MS., Huang, GJ. The conclusion is reliable only based on three retrospective studies with limited patients?. Eur Arch Otorhinolaryngol 277, 2653–2654 (2020). https://doi.org/10.1007/s00405-019-05547-w
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DOI: https://doi.org/10.1007/s00405-019-05547-w