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Article History

Received: 2 July 2019

Accepted: 14 July 2019

First Online: 19 July 2019

Compliance with ethical standards

:

: The authors declare that they have no competing interests.

: Ethical approval was not required for this paper as it represents an opinion letter.

: This article does not involve human subjects or animal research.

: For this type of study formal consent is not required.