IMWG consensus on maintenance therapy in multiple myeloma.

Ludwig H, Durie BG, McCarthy P, Palumbo A, San Miguel J, Barlogie B, Morgan G, Sonneveld P, Spencer A, Andersen KC, Facon T, Stewart KA, Einsele H, Mateos MV, Wijermans P, Waage A, Beksac M, Richardson PG, Hulin C, Niesvizky R, Lokhorst H, Landgren O, Bergsagel PL, Orlowski R, Hinke A, Cavo M, Attal M; International Myeloma Working Group.