RT Journal Article SR Electronic T1 Response to “After hours surgery and mortality: the potential role of acute care surgery models as a factor accounting for results” JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E220 OP E220 DO 10.1503/cmaj.732865 VO 189 IS 5 A1 Sheehan, Katie J. A1 Sobolev, Boris A1 Guy, Pierre A1 YR 2017 UL http://www.cmaj.ca/content/189/5/E220.abstract AB