Received: 11 June 2020
Accepted: 14 July 2020
First Online: 6 August 2020
Ethics approval and consent to participate
: Ethical approval was granted by the regional ethics committee (Servizio Sanitario Regionale Emilia – Romagna Comitato Etico, autorisation n° 378–2020-OSS-AUSLBO) and all participants gave informed consent.
: The authors declare that they have no competing interests.