RT Journal Article SR Electronic T1 Left atrial–esophageal fistula after atrial fibrillation ablation JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1158 OP 1158 DO 10.1503/cmaj.121943 VO 185 IS 13 A1 Sheldon M. Singh A1 Isabelle Nault YR 2013 UL http://www.cmaj.ca/content/185/13/1158.abstract