- Correspondence to Mohamed Abdel-Wahab, Heart Center, Segeberger Kliniken GmbH, Academic Teaching Hospital of the Universities of Kiel & Hamburg, Am Kurpark 1, 23795 Bad Segeberg, Germany;
- Received 8 December 2013
- Revised 19 April 2014
- Accepted 5 May 2014
- Published online 21 July 2014.
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