Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ryozawa Shomei,Japan Gastroenterological Endoscopy Society (JGES) clinical guideline for endoscopic sphincterotomy,Tando,0914-0077,Japan Biliary Association,2017,31,1,87-92,https://cir.nii.ac.jp/crid/1390282679324866432,https://doi.org/10.11210/tando.31.87