RT Journal Article SR Electronic T1 Electrical conversion of atrial flutter to atrial fibrillation. Flutter mechanism in man. JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1215 OP 1224 DO 10.1136/hrt.34.12.1215 VO 34 IS 12 A1 T E Guiney A1 B Lown YR 1972 UL http://heart.bmj.com/content/34/12/1215.abstract AB