RT Journal Article SR Electronic T1 Defining diagnostic tissue in the era of personalized medicine JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 135 OP 139 DO 10.1503/cmaj.120565 VO 185 IS 2 A1 Carol C. Cheung A1 Bella R. Martin A1 Sylvia L. Asa YR 2013 UL http://www.cmaj.ca/content/185/2/135.abstract AB