- Correspondence to Dr Berto J Bouma, Department of Cardiology, Academic Medical Center Amsterdam, Room B2-256, Meibergdreef 9, Amsterdam 1105 AZ, The Netherlands;
- Received March 3, 2015
- Revised June 14, 2015
- Accepted June 18, 2015
- First published July 14, 2015.
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- Data supplement 1 - Online supplement
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