1. Childhood Cancer Research Unit, Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
2. Clinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro University, Örebro, Sweden
3. Clinical Epidemiology Division, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
4. Department of Epidemiology and Public Health, University College London
5. Intervention and Implementation Research, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
6. Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden