1. Department of Pediatrics, Faculty of Medicine and Health, Örebro University, 70182 Örebro, Sweden
2. Faculty of Medicine and Health, School of Health Sciences, Örebro University, 70182 Örebro, Sweden
3. Neonatal Intensive Care Unit, University Hospital, 75185 Uppsala, Sweden
4. Department of Women’s and Children’s Health, Uppsala University, 75237 Uppsala, Sweden
5. Centre for Clinical Research and Education, Region Värmland, 65182 Karlstad, Sweden