Media type: E-Article Title: Pre- and postoperative evaluation of mitral stenosis by ultrasound∗ Contributor: Effert, Sven imprint: Elsevier BV, 1967 Published in: The American Journal of Cardiology Language: English DOI: 10.1016/0002-9149(67)90262-7 ISSN: 0002-9149 Origination: Footnote: