Main Statement
I, the undersigned, Antonio Vitiello and any other author, declare that:
The manuscript was written entirely by the authors;
All authors made an equal contribution in the development of the
paper;
We have no conflict of interest;
We have not received funding/source;
There are no sensitive data and no patients were recruited for this
study;
The document does not conflict with ethical legislation.
The authors accept the full TRANSFER OF COPYRIGHT to the journal.