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ildren by using cutting balloon angioplasty. 〔 J〕 Catheter Cardiovasc Interv. 2020, 67:460 ~465 Suda K, Matsumura M,Hayashi H, et al. Comparison of efficacy of mediumsized cutting balloons versus standard balloons for dilation of peripheral pulmonary stenosis .〔 J 〕 . Am J Cardiol, 2020,97:1060 ~1063 Butera G, Carminati M, Pome G. Use of cuttingballoon angioplasty in a hybrid setting : a new application of the hybrid Approach.〔 J 〕 Invasive Cardiol,2020,20: E327 ~E328 Bergersen LJ, Perry SB, Lock JE. Effect of cutting balloon angioplasty on resistant