Links:
[1] http://jco.ascopubs.org/cgi/content/full/23/33/8512?ijkey=wt60lNsdtW.qg&keytype=ref&siteid=jco
[2] http://www.cancer.net/patient/Cancer+Types/Colorectal+Cancer
[3] http://www.cancer.net/patient/Survivorship/ASCO+Cancer+Treatment+Summaries/ASCO+Cancer+Treatment+Summaries