著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Joseph Mercola and William B. Grant and Carol L. Wagner,Evidence Regarding Vitamin D and Risk of COVID-19 and Its Severity,Nutrients,2072-6643,MDPI AG,2020-10-31,12,11,3361,https://cir.nii.ac.jp/crid/1360294648047608960,https://doi.org/10.3390/nu12113361