1. Laboratory of Viral Immunobiology, Christopher H. Browne Center for Immunology and Immune Diseases, The Rockefeller University, Box 390, 1230 York Avenue, New York, New York 10021-6399
2. Institute of Immunology, Friedrich Schiller University, 07743 Jena, Germany
3. Institute of Neuroimmunology and Clinical Multiple Sclerosis Research (inims), Center for Molecular Neurobiology (ZMNH), Falkenried 94, 20251 Hamburg, Germany