NOT PEER-REVIEWED: Strong Correlation Between Prevalence of Severe Vitamin D Deficiency and Population Mortality Rate from COVID-19 in Europe: Background: SARS-CoV-2 virus causes a very wide range of COVID-19 disease… http://dlvr.it/RZkNLv #covid19 #SARSCOV2 #coronavirus
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The bar is, shall we say, subterranean
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