RT Journal Article SR Electronic T1 The Chaoulli challenge: getting a grip on waiting lists JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 271 OP 273 DO 10.1503/cmaj.050812 VO 173 IS 3 A1 Hadorn, David YR 2005 UL http://www.cmaj.ca/content/173/3/271.abstract