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) E Kenneth Weir and Thenappan Thenappan and Maneesh Bhargava and Yingjie Chen,Does vitamin D deficiency increase the severity of COVID-19?,Clinical Medicine,1470-2118,Elsevier BV,2020-07,20,4,e107-e108,https://cir.nii.ac.jp/crid/1360861295060674944,https://doi.org/10.7861/clinmed.2020-0301