1. Royal Free Campus, UCL Medical School; Department of Surgery; Royal Free Hospital, Rowland Hill Street London UK NW3 2PF
2. West Sussex County Council; Public Health; 1st Floor, The Grange Tower Street Chichester West Sussex UK PO19 1QT
3. University College London Hospitals; Department of Microbiology & Virology; 60 Whitfield Street London UK W1T 4EU