RT Journal Article SR Electronic T1 Coexisting KRAS and NRAS mutations in colon cancer JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 1044 OP 1044 DO 10.1136/jclinpath-2015-203259 VO 68 IS 12 A1 Sorscher, Steven YR 2015 UL http://jcp.bmj.com/content/68/12/1044.2.abstract AB