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Article History

Received: 5 April 2018

Accepted: 13 April 2018

First Online: 23 May 2018

Compliance with ethical standards

:

: The scientific guarantor of this publication is Nikolaos Kartalis.

: The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.

: No complex statistical methods were necessary for this paper.

: Written informed consent was not required for this study because this is an editorial without any study subjects.

: Institutional review board approval was not required because this is an editorial without any study subjects.