- Correspondence to Professor Helmut Baumgartner, Department of Cardiology and Angiology, Adult Congenital and Valvular Heart Disease Center, University Hospital Muenster, Albert-Schweitzer-Campus 1, Muenster 48149, Germany;
- Received October 2, 2012
- Revised October 2, 2012
- Accepted October 8, 2012
- First published November 7, 2012.
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