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doi:10.1371/journal.pone.0239252
Harvey W. Kaufman, Justin K. Niles, Martin H. Kroll, Caixia Bi, Michael F. Holick
SARS-CoV-2 positivity rates associated with circulating 25-hydroxyvitamin D levels
10.1371/journal.pone.0239252
http://dx.doi.org/10.1371/journal.pone.0239252
2020-09-17
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