1. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
2. Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark
3. Laboratory of Molecular Immunology, The Rockefeller University, New York, New York, USA
4. Department of Physics and Astronomy, University of California, Riverside, California, USA
5. Center for Research in Infectious Diseases, National Institute of Respiratory Diseases, Mexico City, Mexico
6. Howard Hughes Medical Institute, The Rockefeller University, New York, New York, USA