Received: 17 October 2017
Accepted: 12 February 2018
First Online: 1 March 2018
Ethics approval and consent to participate
: The design of the study was approved by the CESFAR Ethical Committee on October 26Superscript removed, 2016.
: Only interviews obtained after the respondent’s informed consent to the interview itself, together to the possible use of information for scientific purposes (communication, data publication, and so on) were considered.
: The authors declare that they have no competing interests.
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