- Correspondence to Dr W H Wilson Tang, Department of Cardiology, Heart and Vascular Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue,Desk J3-4, Cleveland,OH 44195, USA;
- Received August 2, 2012
- Revised October 14, 2012
- Accepted October 15, 2012
- First published November 26, 2012.
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