Text and Data Mining valid from 2020-01-29
Received: 20 May 2019
Accepted: 20 December 2019
First Online: 29 January 2020
Change Date: 12 March 2020
Change Type: Correction
Change Details: It was highlighted that in the original article  Fig. 2 was incorrect and the link for the Additional File was missing. This Correction article provides the correct Fig. 2 and the Additional File with its link. The original file has been updated.
Ethics approval and consent to participate
: According to the Italian regulations, ethics committee approval was not required for this type of qualitative study. The participants were informed about and agreed to the use of data according to the Italian Data Protection legislation.
: Not applicable.
: The authors declare that they have no competing interests.