- Correspondence to Dr Rui Providência, Département de Rythmologie, Clinique Pasteur, 45 avenue de Lombez, BP 27617, Toulouse, 31076 Cedex 3, France;
- Received 30 May 2013
- Revised 1 July 2013
- Accepted 2 July 2013
- Published online 22 July 2013.
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