Evidence that Vitamin D Supplementation Could Reduce Risk of Influenza and COVID-19 Infections and Deaths. - PubMed
Nutrients. 2020 Apr 2;12(4). pii: E988. doi: 10.3390/nu12040988.Author information1Sunlight, Nutrition, and Health Research Center, P.O. Box 641603, San Francisco, CA 94164-1603, USA.22289 Highland Lo