经胸超声心动图与经主动脉造影指导动脉导管未闭封堵治疗的对比研究
경흉초성심동도여경주동맥조영지도동맥도관미폐봉도치료적대비연구
A comparative study on transcatheter closure of patent ductus arteriosus guided by transthoracic echocardiography and angiography
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