Received: 22 March 2019
Accepted: 16 May 2019
First Online: 22 May 2019
Ethics approval and consent to participate
: The study was carried out in the Section of Laboratory Diagnostics at Department of Medical genetics, Oslo University Hospital, OUH. The study was assessed by the Data Protection Office at OUH and was approved by the Head of the Department of Medical genetics as a quality of care study.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.