Petrou, Panagiotis
Article History
Received: 8 December 2017
Revised: 30 July 2018
Accepted: 15 September 2018
First Online: 3 October 2018
Compliance with ethical standards
:
: I have not received funding for this research in any form, including travel grants, fellowship, commercial assistance, equipment, honoraria or other payments that may constitute a conflict of interest.
: This study was not performed on humans.