LEFT ATRIAL APPENDAGE FAR FIELD POTENTIALS MIMICKING LEFT SUPERIOR PULMONARY VEIN POTENTIALS: DOES PROXIMITY MATTER? - Vanga, Subba Reddy; Biria, Mazda; Pillarisetti, Jayasree; Guda, Rajeshwar; Feldkamp, Mike; Rosamond, Thomas; Vacek, James L.; Dawn, Buddhadeb; Lakkireddy, Dhanunjaya (Journal of the American College of Cardiology (JACC), 2010)