RT Journal Article SR Electronic T1 The all-clear signal for rare heart arrhythmias JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E213 OP E214 DO 10.1503/cmaj.109-4104 VO 184 IS 4 A1 Stephen Strauss YR 2012 UL http://www.cmaj.ca/content/184/4/E213.abstract