1. Department of Internal Medicine, Faculty of Medicine, University of Botswana, Gaborone, Botswana
2. Department of Pathology, Faculty of Medicine, University of Botswana, Gaborone, Botswana
3. Department of Global Health, University of Washington, Blantyre, Malawi
4. Department of Biomedical Sciences, Faculty of Medicine, University of Botswana, Gaborone, Botswana
5. Division of Clinical Pharmacology, Karolinska Institute, Karolinska University Hospital Huddinge, Stockholm, Sweden
6. Strathclyde Institute of Pharmacy and Biomedical Sciences, Strathclyde University, Glasgow, UK
7. Health Economics Centre, Liverpool University Management School, Liverpool, UK
8. School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa