1. Health Policy Research Group, Department of Pharmacology and Therapeutics, College of Medicine, University of Nigeria, Enugu, Nigeria
2. Department of Political Science, University of Nigeria Nsukka, Enugu, Nigeria
3. Department of Social Work, University of Nigeria Nsukka, Enugu, Nigeria
4. Department of Community Medicine, College of Medicine, University of Nigeria, Enugu, Nigeria
5. Department of Pharmacology and Therapeutics, College of Medicine, University of Nigeria, Enugu, Nigeria
6. School of Medicine, University of Leeds, UK
7. Department of Health Sciences, University of York, UK