1. Department of Biomedicine, Institute of Anatomy, University Hospital Basel, University of Basel, Basel, Switzerland.
2. EBMT Activity Survey Office, Division of Hematology, University Hospital Basel, University of Basel, Basel, Switzerland.
3. Unité de Médecine Interne, Maladies Auto-immunes et Pathologie Vasculaire, Université de Paris, Paris, France.
4. MATHEC, Centre de Référence des Maladies auto-immunes systémiques Rares d'Ile-de-France, Hôpital St-Louis, Paris, France.
5. National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA.
6. Orthopaedic Surgery, Weill Medical College of Cornell University, New York, New York, USA.
7. The Hospital for Special Surgery, New York, New York, USA.
8. Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland.