1. Center of Excellence for Health, Infections and Immunity, Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Denmark
2. Division of Biostatistics, School of Public Health, University of Minnesota
3. Hennepin County Medical Center, Minneapolis, Minnesota
4. University of Athens, Greece
5. Centre Hospitalier de Luxembourg, Service des Maladies Infectieuses, Luxembourg
6. Faculty of Medicine, University of Queensland, Brisbane, Australia