1. Division of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden;
2. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden;
3. Unit of Biostatistics, Division of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden;
4. Department of Medicine, Clinical Epidemiology Unit, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden;
5. Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden;
6. Hematology Center, Karolinska University Hospital, Stockholm, Sweden