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Hypothyroidism is associated with prolonged COVID-19-induced anosmia: a case–control study

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  • GT and PCF contributed equally.

  • Contributors Study conception and design were performed by GT, PCF and ST. Data collection, analysis and interpretation were performed by PCF, EK, MPaneta, KP and LP. Drafting and revising the manuscript were performed by GT, PCF and LP. Critical comments during manuscript revision were provided by EK, MPaneta, KP, CP, MPapathanasiou, SL, PPS and ST. All authors read and approved the final manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.