1. Department of Pathology and Pathogen Biology, The Royal Veterinary College, Hatfield, UK
2. Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, UK
3. Viral Pseudotype Unit (Fitzrovia), Faculty of Science and Technology, University of Westminster, London, UK
4. Viral Pseudotype Unit (Medway), School of Pharmacy, University of Kent, Chatham Maritime, Kent, UK
5. MRC/UCL Centre for Medical Molecular Virology, Division of Infection and Immunity, University College London, London, UK