Jongbloed M R M, Bax J J, de Groot N M S, Dirksen M S, Lamb H J, de Roos A, van der Wall E E, Schalij M J
Department of Cardiology, Leiden University Medical Center, The Netherlands.
Eur J Echocardiogr. 2003 Mar;4(1):54-8. doi: 10.1053/euje.2002.0612.