1. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
2. Faculty of Medicine, Makerere University, Kampala, Uganda
3. International Agency for Research on Cancer, Lyon, France
4. DDL Diagnostic Laboratory, Voorburg, the Netherlands
5. School of Public Health, Makerere University, Kampala, Uganda
6. Uganda Virus Research Institute, Entebbe, Uganda
7. Samfundet Folkhalsan, Helsinki, Finland
8. Cancer Registry of Norway, Oslo, Norway