Cohort study to evaluate the effect of vitamin D, magnesium, and vitamin B12 in combination on progression to severe outcomes in older patients with coronavirus (COVID-19).
Nutrition. 2020 Nov-Dec;79-80:111017. doi: 10.1016/j.nut.2020.111017. Epub 2020 Sep 8.
Nutrition. 2020.
PMID: 33039952
Free PMC article.
Clinical Trial.