1. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
2. Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC
3. Hemato-Oncology Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
4. National Cancer Institute Center for Global Health, Rockville, MD
5. Institute of Human Virology, Department of Epidemiology and Public Health, Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD
6. Institute of Human Virology, Abuja, Nigeria
7. Center for Bioethics and Research, Ibadan, Nigeria