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Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes avery wide range of disease severity from completely asymptomatic to fatal, and the reasons for that are not well understood; however, there are some data that show vitamin D may have aprotective effect. To retrieve the vitamin D levels data, the authors analyzed the vitamin D European population data compiled by 2019 European Calcified Tissue Society (ECTS) statement on vitamin D status published in the European Journal of Endocrinology. For the data set to be used fo