1. Department for Continuing Education, University of Oxford, Oxford, UK
2. Health Economics and Value Unit, Children’s Cancer Hospital, Cairo, Egypt
3. Centre for Evidence Based Medicine, Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
4. Department of Global Pediatric Medicine, St. Jude Children’s Research Hospital, Memphis, TN, USA
5. Department of Pediatric Oncology, Children’s Cancer Hospital, Cairo, Egypt
6. Department of Pediatric Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
7. Oxford Bodleian Health Care Libraries, University of Oxford, Oxford, UK