Alan Tyndall1
, Ulrich A Walker1
, Andrew Cope2
, Francesco Dazzi3
, Cosimo De Bari2
, Willem Fibbe4
, Serena Guiducci5
, Simon Jones3
, Christian Jorgensen6
, Katarina Le Blanc7
, Frank Luyten8
, Dennis McGonagle9
, Ivan Martin1
, Chiara Bocelli-Tyndall1
, Giuseppina Pennesi10
, Vito Pistoia11
, Constantino Pitzalis2
, Antonio Uccelli12
, Nico Wulffraat13
and Marc Feldmann2 
1Rheumatology, University Hospital Basel, Felix Platter Spital, Burgfelderstrasse 101, Basel, CH-4012, Switzerland
2Medicine, DIIID, Rheumatology, King's College London, Strand, London, WC2R 2LS, UK
3Stem Cell Biology, Kennedy Institute of Rheumatology Division, ARC Building, 1 Aspenlea Road, London, W6 8LH, UK
4Immunohematology and Blood Transfusion, Leiden University Medical Center, Albinusdreef 2, Building 1, E3-Q, Leiden, 2300 RC, The Netherlands
5Internal Medicine, Division of Rheumatology, University of Florence, Viale Morgagni, 85, Florence, I-50134, Italy
6Service d'Immuno-Rhumatologie, Lapeyronie University Hospital, 371, av. du Doyen Gaston Giraud, Montpellier, F – 34295, France
7Division of Clinical Immunology, Karolinska Institute, CMB, Box 285, Stockholm, SE-171 77, Sweden
8Rheumatology Section, Leuven University Medical Centre, Herestraat 49, bus 813, Leuven, B – 3000, Belgium
9Molecular Medicine Unit, Rheumatology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
10Neuroimmunologia, University of Genova, Via L.B. Alberti, 4, Genova, I-16132, Italy
11Laboratorio Scientifico di Oncologia, G. Gaslini Scientific Institute, Largo Gerolamo Gaslini, 5, Genova, I-16147, Italy
12Department di Neuroscienze, University of Genova, Via L.B. Alberti, 4, Genova, I-16132, Italy
13Department of Pediatric Immunolgy, University Medical Center Utrecht, Room KC03.063.0, Utrecht, NL-3508 AB, The Netherlands