[1] Bonn Univ Hosp, Dept Internal Med 1, Bonn, Germany
[2] MiB, Berlin, Germany
[3] Infekt Med Ctr Hamburg ICH, Hamburg, Germany
[4] Chelsea & Westminster Hosp, London, England
[5] Royal Free Hosp, London NW3 2QG, England
[6] Univ Paris 06, INSERM, UMR S943, U943, Paris, France
[7] Hop La Pitie Salpetriere, AP HP, Paris, France
[8] Med Univ Vienna, Vienna, Austria