[1] Univ Basel Hosp, Dept Rheumatol, CH-4031 Basel, Switzerland
[2] Hop St Antoine, AP HP, European Blood & Marrow Transplantat Off, Serv Hematol & Therapie Cellulaire, F-75571 Paris, France
[3] Careggi Univ Hosp, Dept Haematol, Florence, Italy
[4] Newcastle Gen Hosp, Newcastle Upon Tyne NE4 6BE, Tyne & Wear, England
[5] Charite, Dept Rheumatol & Clin Immunol, D-13353 Berlin, Germany
[6] Univ Florence, Div Rheumatol, Dept Biomed, Florence, Italy
[7] Osped San Martino Genova, Dept Haematol 2, Genoa, Italy
[8] George Papanicolau Hosp, Thessaloniki, Greece
[9] Univ Strasbourg, Serv Immunol Clin, Strasbourg, France
[10] Univ Childrens Hosp Tubingen, Tubingen, Germany
[11] Univ Med Ctr Utrecht, Utrecht, Netherlands
[12] Univ Leeds, Chapel Allerton Hosp, Sect Musculoskeletal Dis, Leeds, W Yorkshire, England
[13] Hosp Univ Son Espases, Palma de Mallorca, Spain
[14] Hosp Clin Barcelona, Inst Hematol & Oncol, Dept Hematol, Barcelona, Spain
[15] Univ Hosp Leuven, Dept Neurol, Louvain, Belgium
[16] Univ Jena, Dept Pediat, Jena, Germany
[17] Univ Childrens Hosp, Div Immunol Hematol BMT, Zurich, Switzerland
[18] Charles Univ Hosp, Prague, Czech Republic
[19] Leiden Univ, Med Ctr, Dept Rheumatol, Leiden, Netherlands
[20] Med Univ Warsaw, Dept Hematol & Oncol, Cent Clin Hosp, Warsaw, Poland
[21] Sheffield Teaching Hosp Natl Hlth Serv NHS Fdn Tr, Dept Haematol, Sheffield, S Yorkshire, England
[22] Univ Sheffield, Dept Oncol, Sheffield, S Yorkshire, England
[23] Great Ormond St Hosp Sick Children, London, England
[24] Univ Gothenburg, Dept Pediat, Gothenburg, Sweden
[25] Univ Hosp, Dept Hematol, Lund, Sweden
[26] Clin Oncoematol Pediat, Dipartimento Pediat, Padua, Italy
[27] Hop St Antoine, AP HP, Dept Hematol, F-75571 Paris, France
[28] Univ Paris 06, Paris, France
[29] CEREST TC European Blood & Marrow Transplantat, European Blood & Marrow Transplantat Study Off, Fac Med St Antoine, Unite Mixte Rech S938, Paris, France
[30] Univ Tubingen Hosp, Dept Hematol & Rheumatol, Tubingen, Germany
[31] Hop Claude Huriez, Dept Internal Med, Lille, France
[32] Hop St Louis, AP HP, Eurocord Off, Clin Res Unit, Paris, France
[33] St Louis Hosp, INSERM, Internal Med & Vasc Pathol Unit, U976, Paris, France