Funding for this research was provided by:
Ministero dell’Istruzione, dell’Università e della Ricerca (PRIN 2007 prot. 2007WEJLZB and PRIN 2009 prot. 20092ZELR2)
Associazione Italiana per la Ricerca sul Cancro (IG 2011/11855)
Received: 2 November 2020
Accepted: 14 April 2021
First Online: 28 April 2021
: Local Ethics Committees approved the study in each of the six study centers.
: The authors declare that they have no competing interests.