1. University of Nairobi, PO Box 19676 NAIROBI - 00202 KNH, Nairobi, Kenya
2. Kenyatta National Hospital, PO Box 20723, Hospital Rd, Nairobi, Kenya
3. Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 16 Richmond Street, Glasgow G1 1XQ, Scotland
4. Division of Public Health Pharmacy and Management, School of Pharmacy, Sefako Makgatho Health Sciences University, Ga-Rankuwa, Pretoria, South Africa
5. Division of Clinical Pharmacology, Karolinska Institute, Karolinska University Hospital Huddinge, Stockholm, Sweden
6. Department of Pharmacology and Toxicology, College of Pharmacy, Hawler Medical University, Erbil, Iraq