1. Health Policy Research Group, College of Medicine, University of Nigeria, UNTH Road, Enugu State 400001, Nigeria
2. Department of Community Medicine, University of Nigeria Teaching Hospital, P M B 01129, Enugu State, Nigeria
3. The Center for Policy Impact in Global Health, Duke Global Health Institute, Duke University, 310 Trent Drive, Durham, NC 27708, USA
4. Department of Health Administration and Management, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria