1. Department of Epidemiology, University of Michigan School of Public Health, Omaha, NE, USA
2. College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA
3. Central Administration, Komfo Anokye Teaching Hospital, Omaha, NE, USA
4. Department of Medical Oncology and Radiation, Komfo Anokye Teaching Hospital, Omaha, NE, USA
5. Department of Pathology, Komfo Anokye Teaching Hospital, Omaha, NE, USA
6. Department of Surgery, Komfo Anokye Teaching Hospital, Omaha, NE, USA
7. Department of Internal Medicine, University of Michigan, Omaha, NE, USA