- Correspondence to Professor Davide Capodanno, Cardio-Thoracic-Vascular Department, Ferrarotto Hospital, University of Catania, Via Citelli 6, Catania 95100, Italy;
- Received August 22, 2016
- Revised November 30, 2016
- Accepted December 7, 2016
- First published January 9, 2017.
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