Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Takei Daisuke and Matsuzaka Kazumasa and Yomiya Kinomi and Nakamura Masumi,Efficacy of Fentanyl Buccal Tablets for Patients Who Cannot Retain at the Above a Rear Molar between the Upper Cheek and Gum,Palliative Care Research,1880-5302,Japanese Society for Palliative Medicine,2020,15,3,239-243,https://cir.nii.ac.jp/crid/1390285697596936704,https://doi.org/10.2512/jspm.15.239