RT Journal Article SR Electronic T1 Hospitalizations from car collisions twice as likely during evening JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E255 OP E255 DO 10.1503/cmaj.109-4427 VO 185 IS 6 A1 Sarah Spitz YR 2013 UL http://www.cmaj.ca/content/185/6/E255.abstract