1. Viral Pseudotype Unit (Medway), School of Pharmacy, University of Kent, Chatham, Kent, ME4 4TB, UK
2. Viral Pseudotype Unit (Fitzrovia), School of Life Sciences, University of Westminster, London, W1W 6UW, UK
3. School of Veterinary Medicine & Science, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, UK.