Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SHERMAN S.,A prospective series with emphasis on the increased risk associated with sphincter of Oddi dysfunction and nondilated bile duct,Gastroenterology,,,1991,101,,1068-75,https://cir.nii.ac.jp/crid/1574231874398835968,