Case report: pulmonary vein stenosis following RF ablation of paroxysmal atrial fibrillation: successful treatment with balloon dilation. - Moak,J.P.; Moore,H.J.; Lee,S.W.; Giglia,T.M.; Sable,C.A.; Furbush,N.C.; Ringel,R.R. (J Interv Card Electrophysiol, 2000)