Received: 20 March 2022
Accepted: 13 June 2022
First Online: 2 July 2022
: Francesco Cicone, Norbert Galldiks, Annalisa Papa, Karl-Josef Langen, Giuseppe Lucio Cascini, and Giuseppe Minniti have no relevant financial or non-financial interests to disclose.
: This article does not contain any studies with human or animal subjects performed by the any of the authors.
: The article is a literature review for which no ethical approval or consent to participate is required.