RT Journal Article SR Electronic T1 The 10 000-hour rule and residency training JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1272 OP 1272 DO 10.1503/cmaj.090038 VO 180 IS 12 A1 David A. Omahen YR 2009 UL http://www.cmaj.ca/content/180/12/1272.abstract