1. School of Pharmacy, Department of Pharmacy Practice and Policy, Faculty of Health Sciences, University of Namibia, Box 13301 , 340 Mandume Ndemufayo Avenue Pioneers Park, Windhoek, Namibia
2. Department of Pharmacology and Therapeutics, Faculty of Health Sciences, University of Namibia, Box 13301 , 340 Mandume Ndemufayo Avenue Pioneers Park, Windhoek, Namibia
3. Institute of Pathology, Katutura Hospital Complex, Box 277, Windhoek, Namibia
4. Department of Laboratory Medicine, Division of Clinical Pharmacology, Karolinska Institutet, Karolinska University Hospital Huddinge, SE-141 86 Stockholm, Sweden
5. Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
6. Liverpool Health Economics Centre, University of Liverpool Management School, Liverpool L69 7ZH, United Kingdom