RT Journal Article SR Electronic T1 Gene patents and the standard of care JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 256 OP 257 VO 167 IS 3 A1 Gold, Richard A1 Caulfield, Timothy A. A1 Ray, Peter N. YR 2002 UL http://www.cmaj.ca/content/167/3/256.abstract