著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Nielsen, Michael Bachmann",Endosonography of the anal sphincter muscles in healthy volunteers and in patients with defecation disorders,,Munksgaard,1998,Acta radiologica supplementum,,8716156927,,https://cir.nii.ac.jp/crid/1130282268921808896