著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Hirakawa,Hydrogen breath test assessment of orocecal transit time: comparison with barium meal study,Am. J. Gastroenterol,,,1988,83,,1361,https://cir.nii.ac.jp/crid/1371413280591572736,