- Correspondence to Dr Thomas H Marwick, Section of Cardiovascular Imaging, Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, 9500 Euclid Ave, Cleveland, OH 44195, USA;
- Received 4 April 2012
- Accepted 18 June 2012
- Published in print 1 December 2012.
- Published online 14 November 2012.
- Published first 12 July 2012.
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