Meta-Analysis of Ablation of Atrial Flutter and Supraventricular Tachycardia††Conflicts of interest: Dr. Spector is a consultant for Medtronic, Inc., Minneapolis, Minnesota; Biosense Webster, Inc.; and Boston Scientific Corporation, Natick, Massachusetts. Dr. Spector has received research grant support from Medtronic, Inc., and Biosense Webster, Inc. Dr. Reynolds is a consultant for Biosense Webster, Inc., and Sanofi-Aventis, Paris, France. Dr. Calkins is a consultant for Biosense Webster, Inc.; CryoCor, San Diego, California; Medtronic, Inc.; and ProRhythm, Inc., Ronkonkoma, New York. Drs. Sondhi, Xu, and Sledge and Ms. Martin and Ms. Williams were employees of United BioSource Corporation during the conduct of this study.