Risk of progression and survival in multiple myeloma relapsing after therapy with IMiDs and bortezomib: A multicenter international myeloma working group study

S. K. Kumar, J. H. Lee, J. J. Lahuerta, G. Morgan, P. G. Richardson, J. Crowley, J. Haessler, J. Feather, A. Hoering, P. Moreau, X. Leleu, C. Hulin, S. K. Klein, P. Sonneveld, D. Siegel, J. Bladé, H. Goldschmidt, S. Jagannath, J. S. Miguel, R. OrlowskiA. Palumbo, O. Sezer, S. V. Rajkumar, B. G.M. Durie