Fried man p , stevenson w g , bittl j , et al . left main coronaryartery occlusion during radiofrequency catheter ablation of idio2athic outflow treat ventrcular tachycardia j . p a ce , 1997 , 20 : 1 184 马坚,王方正,余培祯,等.射频消融治疗起源于左室流出道的非持续性室性心动过速和频发性室性早搏j .中华心律失常学杂志, 1999 , 3 ( 2 ) 126 - 1296