Sudden olfactory loss as an early marker of COVID-19: a nationwide Italian survey.
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Eur Arch Otorhinolaryngol. 2021 Jan;278(1):247-255. doi: 10.1007/s00405-020-06252-9. Epub 2020 Aug 4.
Eur Arch Otorhinolaryngol. 2021.
PMID: 32749606
Free PMC article.