**Author details**

Michael Demosthenous1 , Konstantinos Triantafyllou<sup>2</sup> and Nikolaos Koumallos2 \*

1 Department of Cardiac Surgery, St. Michael's Hospital, University of Toronto, Toronto, Canada

2 Department of Cardiac Surgery, Hippocration General Hospital, Athens, Greece

\*Address all correspondence to: koumallosn@yahoo.gr

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
