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) WILLIAMS KA,Influence of advanced recipient and donor age on the outcome of corneal transplantation,Br J Ophthalmol,,,1997,81,,835-839,https://cir.nii.ac.jp/crid/1573387450013413760,