Abstract: Journal Pre-proof COVID-19 mortality is associated with low Vitamin D levels in patients with risk factors and/or advanced age Tímea Jenei, Sándor Jenei, László T. Tamás, Ákos Putics, Márta Knausz, Irén Hegedüs, Imre Dinnyés, Zsuzsanna Szalai, Tamás F. Molnár, Béla Büki PII: S2405-4577(21)01129-3 DOI: https://doi.org/10.1016/j.clnesp.2021.11.025 Reference: CLNESP 1209 To appear in: Clinical Nutrition ESPEN Received Date: 17 November 2021 Accepted Date: 17 November 2021 Please cite this article as: Jenei T, Jenei S, Tamás LT, Putics Á, Knausz M, Hegedüs I, Dinnyés I, Szalai Z, Molnár TF, Büki B, COVID-19 mortality is associated with low Vitamin D levels in patients with risk factors and/or advanced age, Clinical Nutrition ESPEN, https://doi.org/10.1016/j.clnesp.2021.11.025. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2021 The Author(s). Published by Elsevier Ltd on behalf of European Society for Clinical Nutrition and Metabolism. 1 COVID-19 mortality is associated with low Vitamin D levels in patients with risk factors and/or advanced age ro DINNYÉS6, Zsuzsanna SZALAI ¹, Tamás F. MOLNÁR⁷,⁸, Béla BÜKI⁹ of Tímea JENEI ¹, Sándor JENEI ², László T. TAMÁS ³, Ákos PUTICS ⁴, Márta KNAUSZ ⁴, Irén HEGEDÜS ⁵ , Imre lP re -p (Family names in capital letters) ¹Department of Pulmonology, Petz Aladár University Teaching Hospital, 2-4. Vasvári Pál u., 9023 Győr, Hungary na E-mail: drjeneitimea@gmail.com; drszalaizs@gmail.com Jo Pécs, Hungary ur ²Department of Informatics, Institute of Matematics and Informatics, University of Pécs, 6. Ifjúság u., 7624 E-mail: jenei@ttk.pte.hu ³ Department of Otorhinolaryngology, Petz Aladár University Teaching Hospital, 2-4. Vasvári Pál u., 9023 Győr, Hungary E-mail: ltamas@gyor.net ⁴Department of Microbiology Petz Aladár University Teaching Hospital, 2-4. Vasvári Pál u., 9023 Győr, Hungary E-mail: akos.putics@gmail.com; drknauszmarta@gmail.com ⁵ Department of Infectology, Petz Aladár University Teaching Hospital, 2-4. Vasvári Pál u., 9023 Győr, Hungary E-mail: hegedus.iren.dr@gmail.com ⁶Department of Laboratory, Petz Aladár University Teaching Hospital, 2-4. Vasvári Pál u., 9023 Győr, Hungary E-mail: dinnyesimre@gmail.com 2 ⁷ Department of Operational Medicine, Faculty of Medicine, University of Pécs, 12. Szigeti u., 7624 Pécs, Hungary; ⁸St. Sebastian Thoracic Surgery Unit, Department of Surgery, Petz Aladár University Teaching Hospital, 2-4. Vasvári Pál u., 9023 Győr, Hungary E-mail: tfmolnar@gmail.com ⁹Department of Otorhinolaryngology, University Hospital Krems, Karl Landsteiner University of Health Sciences, Mitterweg 10, A-3500 Krems an der Donau, Austria -p ro of E-mail: bela.bueki@krems.lknoe.at re Corrsponding author Béla Büki, M.D., Ph.D., lP Department of Otolaryngology, Karl Landsteiner University Hospital Krems, Mitterweg 10, A-3500 Krems an der Donau, Austria; ur Abstract na E-mail: bela.bueki@krems.lknoe.at Jo BACKGROUND & AIMS Although..