1. Department of Epidemiology and Biostatistics Mel & Enid Zuckerman College of Public Health The University of Arizona Tucson AZ USA
2. Department of Community Health and Social Medicine School of Medicine The City College of New York New York NY USA
3. Department of Epidemiology Colorado School of Public Health University of Colorado Aurora CO USA
4. University Teaching Hospital – HIV/AIDS Program Lusaka Zambia
5. Cancer Diseases Hospital Lusaka Zambia