RT Journal Article SR Electronic T1 Ruptured thoracic aortic aneurysm and aortic dissection are entirely different entities JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 57 OP 57 DO 10.1503/cmaj.115-0004 VO 187 IS 1 A1 Steven Millward YR 2015 UL http://www.cmaj.ca/content/187/1/57.2.abstract