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. 2022 Apr 14;150:112965. doi: 10.1016/j.biopha.2022.112965

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© 2022 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 1 — Quantification of 25(OH)D plasma levels. The levels of 25(OH)D (ng/ml) in serum samples of hospitalized patients with COVID-19 who received 2000 IU/day and 10,000IU/day of cholecalciferol was determined at baseline and after 7 and 14 days of treatment. Each dot corresponds to one sample. Statistical significance was calculated using Mann–Whitney U-test.