1. Institute for Immunology and Infection Research, The University of Edinburgh, West Mains Road, Edinburgh EH9 3JT, UK.
2. Molecular Immunology, National Institute for Medical Research, Mill Hill, London NW7 1AA, UK.
3. Academic Department of Rheumatology, Division of Immunology, Infection and Inflammatory Diseases, King’s College School of Medicine, Guy’s Campus, King’s College London, London SE1 1UL, UK.
4. Department of Experimental Medical Sciences, Immunology Section, Lund University, Lund SE-221 84, Sweden.