1. Argenx Zwijnaarde Belgium
2. IRCCS Azienda Ospedaliero–Universitaria di Bologna Bologna Italy
3. Istituto di Ematologia “Seràgnoli,” Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale Università degli Studi Bologna Italy
4. Groupe de Recherche sur les Formes Injectables et les Technologies Associées Université de Lille, CHU Lille, EA 7365 Lille France
5. Department of Dermatology Centre Hospitalier Lyon Sud Pierre Bénite France
6. Service Hématologie Institut Jules Bordet Brussels Belgium
7. Gustave Roussy Villejuif France
8. University Hospital Gent Gent Belgium
9. Inserm U1053, Department of Dermatology Centre Hospitalier Bordeaux France
10. Hôpital Saint Louis, Université de Paris, INSERM U1160 Paris France
11. Department of Pathology University Hospital Antwerp Edegem Belgium
12. Inserm U645 Centre Hospitalier Universitaire de Besançon Besançon France
13. Division of Hematopathology European Institute of OncologyIRCCS Milan Italy
14. Inserm U976 Hôpital Saint LouisUniversité de Paris Paris France