Text and Data Mining valid from 2019-01-10
Received: 21 February 2018
Accepted: 20 December 2018
First Online: 10 January 2019
Ethics approval and consent to participate
: This study was part of a comprehensive PhD thesis work, ethically approved by the Local Ethical Review Board of Lund Nr 2013/45. Written consent to participate was given by all participants.
: Not applicable.
: The authors declare at they have no competing interests.
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