1. Faculty of Health and Society, University of Northampton, United Kingdom
2. School of Life Science, University of Warwick, Coventry, United Kingdom
3. School of Nursing and Health Sciences, University of Dundee, Scotland, United Kingdom
4. Department of Anaesthesia/Pain & Palliative Care Unit, Multidisciplinary Oncology Centre, College of Medicine, University of Nigeria, Enugu, Nigeria