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a The learning curve of the zero-fluoroscopy (ZF) approach during the ablation of supraventricular arrhythmia. Panel showed the average procedure time for the 1st to 20th cases, 21st to 40th cases, 41st to 60th cases, and all cases when each of the two approaches was used. b Graph showed linear trend of the procedure time for the first 120 ablations performed using zero-fluoroscopy approach
