1. University College London; London UK
2. St George's University of London; London UK
3. Temple University Hospital; Philadelphia PA USA
4. Department of Infectious Diseases; CHIP; Rigshospitalet; Copenhagen Denmark
5. SUNY Downstate Medical Center; New York City NY USA
6. Saint-Louis Hospital; Paris France
7. University of Würzburg; Würzburg Germany
8. Department of Medicine I; University of Bonn; Bonn Germany