RT Journal Article SR Electronic T1 Resident duty hours in Canada: past, present and future JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 761 OP 765 DO 10.1503/cmaj.131053 VO 186 IS 10 A1 Reena Pattani A1 Peter E. Wu A1 Irfan A. Dhalla YR 2014 UL http://www.cmaj.ca/content/186/10/761.abstract