Use of Biologics to Treat Relapsing and/or Refractory Eosinophilic Granulomatosis with Polyangiitis: data from a European Collaborative Study.

Canzian, A; Venhoff, N; Urban, Ml; Sartorelli, S; Ruppert, Am; Groh, M; Girszyn, N; Taillé, C; Maurier, F; Cottin, V; de Moreuil, C; Germain, V; Samson, M; Jachiet, M; Denis, L; Rieu, V; Smets, P; Pugnet, G; Deroux, A; Durel, Ca; Aouba, A; Cathébras, P; Deligny, C; Faguer, S; Gil, H; Godeau, B; Lifermann, F; Phin-Huynh, S; Ruivard, M; Bonniaud, P; Puéchal, X; Kahn, Je; Thiel, J; Dagna, L; Guillevin, L; Vaglio, A; Emmi, G; Terrier, B; French Vasculitis Study Group (FVSG), the European EGPA Study Group.