Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Aoki Shinjiro and Kawabe Ryoichi and Fujita Kiyohide,The conditions indicating an elective neck dissection for oral cancers,Journal of Japanese Society of Oral Oncology,0915-5988,Japanese Society of Oral Oncology,2001,13,Suppliment,325-329,https://cir.nii.ac.jp/crid/1390282679322063360,https://doi.org/10.5843/jsot.13.suppliment_325