id	domain	url
mkg-1048	www.soc.nii.ac.jp	http://www.soc.nii.ac.jp/jsdmd/2000/19-5je.html
mkg-1048	www.ncbi.nlm.nih.gov	http://www.ncbi.nlm.nih.gov
mkg-1048	www.jdr.iadrjournals.org	http://www.jdr.iadrjournals.org
mkg-1048	jdr.iadrjournals.org	http://jdr.iadrjournals.org/cgi/content/full