Funding for this research was provided by:
Vestre Viken HF (not applicable)
Received: 3 February 2020
Accepted: 4 June 2020
First Online: 31 August 2020
Ethics approval and consent to participate
: The current study, and the study from which the comparison data were derived, were both conducted in accordance with the Declaration of Helsinki. All parents gave informed oral and written consent on behalf of themselves and their infant. The study from which the comparison group data were derived was approved by the Norwegian Center for Research Data (11724) and the Norwegian Regional Committee for Medical Ethics (2016/1300), which also approved the current study (2014/388).
: Participants gave consent for publication.
: The authors declare that there are no competing interests.