Text and Data Mining valid from 2019-12-01
Received: 23 April 2019
Accepted: 27 November 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: The study conformed to the principles outlined in the Declaration of Helsinki and was approved by the Regional Ethics Committee, Lund, Sweden (2009/7). All participants were invited to complete the questionnaire, were informed about the voluntary nature of their participation and were guaranteed confidentiality.
: None declared.
: The authors declare that they have no competing interests.