1. From the Department of Pathology, Muhimbili National Hospital, Dar es Salaam, Tanzania (Ngaiza, Vuhahula)
2. The Department of Pathology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania (Vuhahula)
3. The Department of Histopathology and Morbid Anatomy, University of Dodoma, Dodoma, Tanzania (Yahaya)
4. The Department of Pathology, University Teaching Hospital of Kigali, Kigali, Rwanda (Ndayisaba)
5. The Department of Molecular Biology and Biotechnology, University of Dar es Salaam, Dar es Salaam, Tanzania (Kawishe)
6. The Department of Pathology (Grenert, Ng), University of California, San Francisco
7. The Department of Epidemiology and Biostatistics (Zhang), University of California, San Francisco
8. The Division of Hematology/Oncology, Department of Medicine (Zhang, Van Loon), University of California, San Francisco
9. The Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco (Ng, Zhang, Van Loon)
10. Ng is currently affiliated with the Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York