Affiliations

• ¹ Department of Obstetrics and Gynaecology, Østfold Hospital Trust, 1714 Grålum, Norway; Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway. Electronic address: stine.bernitz@so-hf.no.
• ² Department of Obstetrics and Gynaecology, Østfold Hospital Trust, 1714 Grålum, Norway; Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway.
• ³ Research Support Services, Clinical Trial Unit, Oslo University Hospital, Oslo, Norway.
• ⁴ Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway.
• ⁵ Department of Obstetrics and Gynaecology, University Hospital of North Norway, Norway; Department of Clinical Medicine, Faculty of Health Sciences, The Arctic University of Norway (UiT), Tromsø, Norway.
• ⁶ National Centre for Fetal Medicine, St Olavs University Hospital, Trondheim, Norway.