Leukemia, 35(9), 2715-2719. Nature Publishing Group Stege, C A M, Nasserinejad, K, Klein, S K, Timmers, G J, Hoogendoorn, M, Ypma, P F, Nijhof, I S, Velders, G A, Strobbe, L, Durdu-Rayman, N, Westerman, M, Davidis-van Schoonhoven, M A, van Kampen, R J W, Beeker, A, Koster, A, Dijk, A C, van de Donk, N W C J, van der Spek, E, Leys, R B L, Silbermann, M H, Groen, K, van der Burg-de Graauw, N C H P, Sinnige, H A M, van der Hem, K G, Levenga, H, Bilgin, Y M, Sonneveld, P, Levin, M D & Zweegman, S 2021, ' Improving the identification of frail elderly newly diagnosed multiple myeloma patients ', Leukemia, vol. 35, no. 9, pp. 2715-2719 . https://doi.org/10.1038/s41375-021-01162-z