Funding for this research was provided by:
Regione Lombardia (37884236)
Received: 20 February 2019
Accepted: 3 June 2019
First Online: 16 July 2019
Ethics approval and consent to participate
: The study was evaluated by the Institutional Review Board (ASST Grande Ospedale Metropolitano Niguarda), and the requirement for informed consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.