id	domain	url
stem-4598	www.statcan.gc.ca	http://www.statcan.gc.ca/pub/82-003-x/82-003-x2010001-eng.htm
stem-4598	www.statcan.gc.ca	http://www.statcan.gc.ca/pub/82-003-x/82-003-x2010001-eng.htm
stem-4598	www.mayoclinicproceedings.org	www.mayoclinicproceedings.org/article/s0025-619660190-0/fulltext