1. Neurology Unit, Department of Medicine, College of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
2. Department of Family Medicine, State Hospital, Ilesa, Nigeria
3. Neurology Unit, Department of Medicine, College of Health Sciences, Ladoke Akintola University of Technology, Osogbo, Nigeria
4. Department of Chemical Pathology, College of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria.