1. Department of Medicine; Clinical Epidemiology Unit, Karolinska Institutet and Karolinska University Hospital; Stockholm Sweden
2. Department of Immunology, Genetics and Pathology Clinical and Experimental Oncology; Uppsala University and Uppsala Akademiska Hospital; Sweden
3. Department of Medical Epidemiology and Biostatistics; Karolinska Institutet; Stockholm Sweden
4. Department of Oncology; Skåne University Hospital; Lund Sweden
5. California and Department of Health Research and Policy; Health Sciences Practice, Exponent, Inc., Menlo Park, Stanford University School of Medicine; Stanford California
6. Department of Medicine Division of Hematology; Karolinska University Hospital and Karolinska Institutet; Stockholm Sweden