1. Department of Public Health and General Practice Norwegian University of Science and Technology Trondheim Norway
2. Trondheim University Hospital (St Olavs Hospital) Trondheim Norway
3. Clinical Services St Olavs Hospital Trondheim University Hospital Trondheim Norway
4. Department of Laboratory Medicine Children's and Women's Health Norwegian University of Science and Technology Trondheim Norway
5. National Center for Fetal Medicine Department of Obstetrics and Gynecology Trondheim University Hospital Trondheim Norway
6. Ageing and Health Norwegian Centre for Research Education and Service Development Vestfold Hospital Trust Tønsberg Norway