RT Journal Article SR Electronic T1 US health spending up; medicare expanded JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1545 OP 1545 DO 10.1503/cmaj.050409 VO 172 IS 12 A1 Michelle Catton YR 2005 UL http://www.cmaj.ca/content/172/12/1545.1.abstract