1. Department of Pharmacology and Therapeutics, College of Medicine, Ekiti State University, Ado-Ekiti, Nigeria;
2. Department of Pharmacology, College of Medicine, Lagos State University, Lagos, Nigeria;
3. Department of Dentistry, College of Medicine, Ekiti State University, Ado-Ekiti, Nigeria;
4. Department of Anaesthesia, College of Medicine, Ekiti State University, Ado-Ekiti, Nigeria;
5. Department of Laboratory Medicine, Division of Clinical Pharmacology, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden;
6. Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK;
7. Health Economics Centre, Liverpool University Management School, Liverpool, UK