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through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/dth.14479 Letter The Manifestation of Oral Mucositis in COVID-19 Patients: A case-series Author(s) Abanoub RIAD,1 Islam KASSEM,2 Mai BADRAH,3 and Miloslav KLUGAR1 Affiliation(s) 1 Czech National Centre for Evidence-Based Healthcare and Knowledge Translation (Cochrane Czech Republic, Czech EBHC: JBI Center of Excellence, Masaryk University GRADE Center), Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic 2 Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Port Said Street 293, 213 11 Alexandria, Egypt 3 Department of Internal Medicine, Faculty of Medicine, Alexandria University, Port Said Street 293, 213 11 Alexandria, Egypt Corresponding Author Dr Abanoub RIAD, DDS P.O.: Czech National Centre for Evidence-Based Healthcare and Knowledge Translation (Cochrane Czech Republic, Czech EBHC: JBI Center of Excellence, Masaryk University GRADE Center), Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic Email: [email protected]