The severity of disease in cases of COVID-19 ranges significantly, from asymptomatic to fatal, and the reasons for this are often unclear.
The researchers say that since some evidence suggests that vitamin D may play a protective role, they decided to assess European country-wide data to establish whether there is any link between levels of vitamin D and COVID-19 mortality rate.
The team assessed vitamin D population data that had been compiled by the European Credit Transfer and Accumulation System (ECTS) Statement on Vitamin D Status and published in the European Journal of Endocrinology.
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