1. Specialist Virology Centre, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
2. West of Scotland Specialist Virology Centre, Glasgow, United Kingdom
3. Centre for Infectious Diseases, University of Edinburgh, Edinburgh, United Kingdom
4. Department of Haematology, Western General Hospital, Edinburgh, United Kingdom
5. Metabolic Unit, Western General Hospital, Edinburgh, United Kingdom
6. Intensive Therapy Unit, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
7. Department of Paediatric Haematology, Royal Hospital for Sick Children, Glasgow, United Kingdom
8. Bone Marrow Transplant Unit, Gartnaval General Hospital, Gartnavel General Hospital, Glasgow, United Kingdom