Geleijnse, Marcel L Let's twist. [electronic resource] - European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology Jan 2009 - 46-7 p. digital Publication Type: Editorial; Historical Article; Comment ISSN: 1532-2114 Standard No.: 10.1093/ejechocard/jen241 doi Subjects--Topical Terms: Diagnostic Imaging--historyEchocardiography--historyHeart Ventricles--diagnostic imagingHistory, 16th CenturyHistory, 20th CenturyHumansNetherlands