1. Clinical Trial Service Unit & Epidemiological Studies Unit, Nuffield Department of Population HealthUniversity of Oxford Oxford United Kingdom
2. African Cancer Registry Network Oxford United Kingdom
3. Institute for Medical Epidemiology, Biometry and InformaticsMartin‐Luther‐University Halle‐Wittenberg Halle Germany
4. Section of Cancer SurveillanceInternational Agency for Research on Cancer Lyon France