Text and Data Mining valid from 2019-11-08
Received: 23 July 2019
Accepted: 23 October 2019
First Online: 8 November 2019
Ethics approval and consent to participate
: Ethics approval was received from the Regional Ethics Board of Uppsala (Reg.no 2015/434).
: Consent for publication was received from the participants, who responded anonymously.
: Both authors declare no competing interests.