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) Ruth England and Matthew Maddocks and Cathann Manderson and Sonja Zadora-Chrzastowska and Andrew Wilcock,How practical are transmucosal fentanyl products for breakthrough cancer pain? novel use of placebo formulations to survey user opinion: Table 1,BMJ Supportive & Palliative Care,2045-435X,BMJ,2011-09-02,1,3,349-351,https://cir.nii.ac.jp/crid/1364233268357814656,https://doi.org/10.1136/bmjspcare-2011-000037