Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KOWDLEY KV,Hepatic copper content is normal in early primary biliary cirrhosis and primary sclerosing cholangitis,Dig Dis Sci,,,1994,39,,2416-2420,https://cir.nii.ac.jp/crid/1570572701360980480,https://doi.org/10.1007/bf02087659