1. Institute of Molecular Pathogenesis, Friedrich-Loeffler-Institut, 07743 Jena, Germany
2. Vakzine Projekt Management GmbH, 30625 Hannover, Germany
3. Department of Immunology, Max Planck Institute for Infection Biology, 10117 Berlin, Germany
4. Max Planck Institute for Multidisciplinary Sciences, 37077 Göttingen, Germany
5. Hagler Institute for Advanced Study, Texas A&M University, College Station, TX 7843, USA