1. Division of Cancer Epidemiology and GeneticsNational Cancer Institute Rockville MD
2. MRC‐University of Glasgow Centre for Virus Research Glasgow United Kingdom
3. Statens Serum Institut Copenhagen Denmark
4. Department of HaematologyRigshospitalet Copenhagen Denmark
5. Centre for Molecular Therapeutics, Australian Institute of Tropical Health & MedicineJames Cook University Cairns QLD Australia
6. Stanford Cancer Institute Stanford CA
7. Center for Health SciencesExponent, Inc. Menlo Park CA
8. Department of Medicine Solna, Division of Clinical EpidemiologyKarolinska Institutet Stockholm Sweden
9. REPROCELL Europe Ltd. Glasgow United Kingdom
10. Department of Medical Epidemiology and BiostatisticsKarolinska Institutet Stockholm Sweden
11. Clinical Effectiveness Research GroupInstitute of Health, University of Oslo Oslo Norway
12. Department of Immunology, Genetics and PathologyUppsala University Uppsala Sweden
13. University of CopenhagenClinical Medicine Copenhagen Denmark
14. Stanford University School of Medicine Stanford CA
15. Cancer Epidemiology Program, Division of Population SciencesH. Lee Moffitt Cancer Center and Research Institute Tampa FL