1. Department of Women's and Children's Health Uppsala University Sweden
2. Epidemiology and Global Health Umeå University Umeå Sweden
3. Department of Clinical Sciences, Lund Pediatrics Lund University Lund Sweden
4. Children's Hospital University of Helsinki and Folkhälsan Research Center Helsinki Finland
5. Forensic Medicine Department of Surgical Sciences Uppsala University Sweden
6. County Hospital of Örnsköldsvik Region Västernorrland Örnsköldsvik Sweden
7. Department of Clinical Medicine K1 University of Bergen Bergen Norway