Lu, C [Evaluation of the results in percutaneous balloon pulmonary valvuloplasty by Doppler echocardiography]. [electronic resource] - Zhonghua xin xue guan bing za zhi Dec 1990 - 368-9 p. digital Publication Type: Journal Article ISSN: 0253-3758 Subjects--Topical Terms: AdolescentAdultCatheterization--methodsChildChild, PreschoolEchocardiography, DopplerFemaleHumansMalePulmonary Valve--diagnostic imagingPulmonary Valve Stenosis--diagnostic imaging