1. Department of Radiation Oncology H. Lee Moffitt Cancer Center Tampa Florida USA
2. Department of Cancer Epidemiology H. Lee Moffitt Cancer Center Tampa Florida USA
3. National Center for Radiotherapy, Oncology and Nuclear Medicine Korle Bu Teaching Hospital Accra Accra Ghana
4. Department of Pathology University of Ghana Medical School, Korle bu Teaching Hospital Accra Ghana
5. Department of Surgery University of Ghana Medical School, Korle bu Teaching Hospital Accra Ghana
6. Department of Pathology H. Lee Moffitt Cancer Center Tampa Florida USA
7. Department of Radiation Oncology University of Miami Miami Florida USA
8. Hospital General Idrissa Pouye Dakar Senegal
9. Department of Pathology Stony Brook University New York city New York USA
10. Department of Pathology University of Pennsylvania Philadelphia Pennsylvania USA
11. Dana Farber Cancer Institute and Harvard TH Chan School of Public Health Boston Massachusetts USA