RT Journal Article SR Electronic T1 AV node ablation and implantation of mode switching dual chamber pacemakers: effective treatment for drug refractory PAF JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 450 OP 451 DO 10.1136/hrt.81.4.450a VO 81 IS 4 A1 T LEVY A1 S WALKER A1 V PAUL YR 1999 UL http://heart.bmj.com/content/81/4/450.2.abstract AB