Pappalardo, Carmine M.
Lettieri, Antonio
Guida, Domenico
Article History
Received: 3 December 2019
Accepted: 20 April 2020
First Online: 12 May 2020
Compliance with ethical standards
:
: This research paper was principally developed by the first author (Carmine Maria Pappalardo). A great support was provided by the second author (Antonio Lettieri). The detailed review carried out by the third author (Domenico Guida) considerably improved the quality of the work.
: The authors declare no conflicts of interest.