1. Institute of Virology, Helmholtz Zentrum München, Munich, Germany.
2. Institute of Virology, School of Medicine, Technical University of Munich, Munich, Germany.
3. Vaccine and Gene Therapy Institute, Oregon Health and Science University, Beaverton, Oregon, USA.
4. German Primate Center (DPZ), Göttingen, Germany.
5. Oregon National Primate Research Center (ONPRC), Oregon Health and Science University, Beaverton, Oregon, USA.
6. German Center for Infection Research (DZIF), Munich Partner Site, Munich, Germany.