id	domain	url
mkg-774	www.cancerresearchuk.org	http://www.cancerresearchuk.org/cancerhelp/type/nasopharyngeal-cancer/about/nasopharyngeal-cancerrisks-and-causes
mkg-774	www.cancer.org	http://www.cancer.org/cancer/nasopharyngealcancer/detailedguide