RT Journal Article SR Electronic T1 Validity of utilization review tools JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1239 OP 1239 VO 163 IS 10 A1 David Zitner A1 Donald Fay A1 Neil Ritchie YR 2000 UL http://www.cmaj.ca/content/163/10/1239.1.abstract