| Ebbing Lautenbach | Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania |
| Ebbing Lautenbach | Perelman School of Medicine, University of Pennsylvania |
| Ebbing Lautenbach | Perelman School of Medicine, University of Pennsylvania |
| Mosepele Mosepele | University of Botswana |
| Robert Gross | Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania |
| Robert Gross | Perelman School of Medicine, University of Pennsylvania |
| Robert Gross | Perelman School of Medicine, University of Pennsylvania |