1. Department of Public Health and Clinical Medicine, Epidemiology and Global Health, Umeå University, Umeå, Sweden, Research & Development, Education and Public Health, Västerbotten County Council, Umeå, Sweden,
2. Department of Public Health and Clinical Medicine, Epidemiology and Global Health, Umeå University, Umeå, Sweden, Department of Statistics, Umeå University, Umeå, Sweden
3. Research & Development, Education and Public Health, Västerbotten County Council, Umeå, Sweden
4. Department of Public Health and Clinical Medicine, Epidemiology and Global Health, Umeå University, Umeå, Sweden, Research & Development, Education and Public Health, Västerbotten County Council, Umeå, Sweden
5. Department of Clinical Science, Obstetrics and Gynecology, Umeå University, Umeå, Sweden