Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
HANSON JM,Rectal retroflexion : an essential part of lower gastrointestinal endoscopic examination,Dis Colon Rectum,,,2001,44,,1706-1708,https://cir.nii.ac.jp/crid/1571135649982034176,