RT Journal Article SR Electronic T1 Why most interventions to improve physician prescribing do not seem to work JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 30 OP 31 VO 169 IS 1 A1 Majumdar, Sumit R. A1 Soumerai, Stephen B. YR 2003 UL http://www.cmaj.ca/content/169/1/30.abstract