1 Department of Immunology, Laboratory Medical Immunology, Erasmus MC, Rotterdam, The Netherlands.
2 Division of Environmental Epidemiology and Veterinary Public Health, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands.
3 Department of Radiation Sciences, Oncology, Cancer Center, Department of Hematology, Umeå University, Umeå, Sweden.
4 Second Medical Department, University Hospital Schleswig-Holstein, Kiel, Germany.
5 Department of Hematology, University Hospital Schleswig-Holstein, Kiel, Germany.
6 Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden.
7 Genomic Epidemiology Branch, International Agency for Research on Cancer, Lyon, France.