Text and Data Mining valid from 2020-02-04
Received: 9 September 2019
Accepted: 21 January 2020
First Online: 4 February 2020
Ethics approval and consent to participate
: The Regional Ethics Committee (REC) was informed about the study and deemed the study a clinical quality study not needing formal REC approval. All institutional bodies waived the need for patient consent.
: Not applicable.
: The authors declare that they have no competing interests.