Konings Thelma C, Bouma Berto J, de Winter Robbert J, Groenink Maarten, Mulder Barbara J M
Department of Cardiology, VU University Medical Centre, Amsterdam, The Netherlands.
Echocardiography. 2009 Feb;26(2):230-1. doi: 10.1111/j.1540-8175.2008.00830.x. Epub 2008 Nov 11.