RT Journal Article SR Electronic T1 Subarachnoid hemorrhage JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1421 OP E1421 DO 10.1503/cmaj.170893 VO 189 IS 46 A1 Fernando, Shannon M. A1 Perry, Jeffrey J. YR 2017 UL http://www.cmaj.ca/content/189/46/E1421.abstract AB