1. Institute of Medical Microbiology, University of Regensburg, Regensburg, Germany.
2. Geneart AG, Regensburg, Germany.
3. Sanofi Pasteur, Marcy-L'Étoile, France.
4. Section of Infectious Diseases, Division of Medicine, Faculty of Medicine, Imperial College, London, U.K.
5. Department of Molecular and Cellular Biology, Centro Nacional de Biotecnologia, CSIC, Ciudad Universitaria Cantoblanco, Madrid, Spain.
6. Microbiology and Tumorbiology Centre, Karolinska Institute, Stockholm, Sweden.
7. Laboratory of AIDS Immunopathogenesis, Division of Immunology and Allergy, Department of Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.