- Correspondence to Dr. João L Cavalcante, Heart & Vascular Institute - UPMC, University of Pittsburgh, 200 Lothrop Street, Scaife Hall, S-558 Pittsburgh, PA 15213, USA;
- Received June 6, 2017
- Revised September 18, 2017
- Accepted September 19, 2017
- First published September 29, 2017.
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