CHUNG-I CHANG2020-03-042020-03-0420031011-6842https://www.scopus.com/inward/record.uri?eid=2-s2.0-1642476334&partnerID=40&md5=1b43dfa0e88219d2a3d1b46d800552e7https://scholars.lib.ntu.edu.tw/handle/123456789/469668Echocardiographic Analysis of St. Jude Hemodynamic Plus Valve in Aortic Position - Is There an Independent Index to Indicate Valve Obstruction?note2-s2.0-1642476334