- Received in September 30, 2016.
- Accepted in November 28, 2016.
- Published print in December 8, 2016.
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Copyright © 2016 Harel et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International, which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.
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Author Contributions: All authors contributed equally to the search of references and writing of the paper.
Authors report no conflict of interest.
Manuscript has been written at company’s own cost.