1. National Advisory Unit on Pregnancy and Rheumatic Diseases; Department of Rheumatology; Trondheim University Hospital; Trondheim Norway
2. Department of Neuroscience; Norwegian University of Science and Technology; Trondheim Norway
3. National Center for Fetal Medicine; Department of Obstetrics and Gynecology; Trondheim University Hospital; Trondheim Norway
4. Department of Laboratory Medicine; Women's and Child Health; Norwegian University of Science and Technology; Trondheim Norway
5. Department of Global Public Health and Primary Health Care; University of Bergen; Bergen Norway
6. Medical Birth Registry of Norway; Division of Epidemiology; Norwegian Institute of Public Health; Bergen Norway