RT Journal Article SR Electronic T1 Physician billing highest in Ontario, lowest in Quebec JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 776 OP 776 DO 10.1503/cmaj.1040208 VO 170 IS 5 A1 Lynda Buske YR 2004 UL http://www.cmaj.ca/content/170/5/776.1.abstract