1. Division of B Cell Immunology, German Cancer Research Center, Heidelberg, Germany.
2. Biosciences Faculty, University of Heidelberg, Heidelberg, Germany.
3. Sanaria Inc., Rockville, MD 20850, USA.
4. Institute of Tropical Medicine and German Center for Infection Research, University of Tübingen, Tübingen, Germany.
5. Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon.
6. Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, Netherlands.