RT Journal Article SR Electronic T1 How important is it to identify avoidable hospital readmissions with certainty? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E368 OP E369 DO 10.1503/cmaj.110448 VO 183 IS 7 A1 Norbert Goldfield YR 2011 UL http://www.cmaj.ca/content/183/7/E368.abstract