1. Research Group Emerging Zoonoses, Robert Koch Institute, Berlin, Germany
2. Division of Viral Infections, Robert Koch Institut, Berlin, Germany
3. Mountain Gorilla Veterinary Project, Inc., Baltimore, Maryland
4. Budongo Conservation Field Station, Masindi, Uganda
5. School of Psychology, University of St. Andrews, St. Andrews, Scotland, United Kingdom
6. Norwegian School of Veterinary Science, Oslo, Norway
7. LANADA/Laboratoire Central de la Pathologie Animale, Bingerville, Côte d'Ivoire
8. Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany