1. Department of Research, INOVA Diagnostics Inc., 9900 Old Grove Road, San Diego, CA 92131-1638, USA
2. Microbiology and Virology Institute, San Carlo Borromeo Hospital, Via Pio II 3, 20153 Milan, Italy
3. Division of Immunology, University Hospital Marqués de Valdecilla-IFIMAV, Avenida Valdecilla, 39008 Santander, Spain
4. Department of Immunology and Internal Medicine, Hospital of Pitie-Salpêtriere, Boulevard de l’Hôpital, 75634 Paris, France
5. Department of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB, Canada T2N 4N1