Received: 16 July 2019
Accepted: 12 April 2020
First Online: 1 May 2020
Ethics approval and consent to participate
: All the procedures and the research project were approved by the local ethics committee (Internal Review Board of University of L’Aquila, approval number: 38204). Written informed consent was obtained from each participant prior to inclusion.
: Not applicable.
: The authors declare that they have no competing interests.