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Authors
Laborie, Lene Bjerke
Sera, Francesco
Jacobsen, Kaya Kvarme
Gundersen, Trude
Rosendahl, Karen
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Funding
Funding for this research was provided by:
University of Bergen
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Article History
Received: 25 August 2025
Accepted: 22 December 2025
First Online: 30 December 2025
Declarations
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: All participants gave written informed consent according to the 1964 Declaration of Helsinki at time of follow-up in 2007–09. All participants were above age 16 years at time of follow-up and at time of data collection in 2007–09, and informed consent from parents or legal guardians was therefore not required nor obtained at time of follow-up. Informed consent to participate was obtained from the parents or legal guardians for all participants in the neonatal period for the initial RCT in 1988–90. The study research protocol, including retrospective data collection and analyses of the non-responders, was approved by the Medical Research Ethics Committee of the Western region of Norway (No. 20594).
: Not applicable.
: The authors declare no competing interests.
