[1] Addenbrookes Hosp, Dept Infect Dis, Cambridge, England
[2] Addenbrookes Hosp, Dept Radiol, Cambridge CB2 2QQ, England
[3] Addenbrookes Hosp, Dept Histopathol, Cambridge CB2 2QQ, England
[4] St Thomas Hosp, Dept Histopathol, London SE1 7EH, England