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) KRAMER I. R.,Definition of leukoplakia and related lesions : an aid to studies on oral precancer,Oral Surg Oral Med Oral Pathol,,,1978,46,,518-539,https://cir.nii.ac.jp/crid/1571980076292240896,