1. Institute for Medical Immunology; Charité - Universitätsmedizin Berlin; Berlin Germany
2. Experimental and Clinical Research Center, a joint cooperation between the Charité - Universitätsmedizin Berlin and the Max-Delbrück Center for Molecular Medicine; Berlin Germany
3. German Rheumatism Research Center; Germany and Charité - Universitätsmedizin Berlin; Berlin Germany
4. Biogen; Cambridge MA USA
5. Department of Biology; University of Texas at San Antonio; San Antonio TX USA