Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) GERTZ EW,Clinical superiority of a new nonionic contrast agent (iopamidol) for cardiac angiography,J Am Coil Cardiol,,,1985,5,,250-258,https://cir.nii.ac.jp/crid/1572261550189963008,