Text and Data Mining valid from 2020-01-10
Received: 11 November 2019
Accepted: 20 December 2019
First Online: 10 January 2020
Ethics approval and consent to participate
: Ethics approval was obtained from the Norwegian Data Protection Authority (266–2005-142234). Written informed consents were obtained from the KT recipients.
: Written informed consents were obtained from the KT recipients. Copies of the written consents are available for review of the Editor-in-Chief of this journal.
: The authors declare that they have no competing interests.