RT Journal Article SR Electronic T1 Pay for performance: learning about quality JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1717 OP 1719 DO 10.1503/cmaj.070472 VO 176 IS 12 A1 Chaim M. Bell A1 Wendy Levinson YR 2007 UL http://www.cmaj.ca/content/176/12/1717.abstract