Received: 28 July 2020
Accepted: 27 May 2021
First Online: 1 July 2021
: the consent to participate was required and the participation in the survey was voluntary and anonymous. Approval was obtained from the local Ethical Committee (Comitato Etico Interaziendale Novara CE 71/20), which conformed to the principles embodied in the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.