The significance of free light-chain ratio in light-chain monoclonal gammopathy of undetermined significance: a flow cytometry sub-study of the iStopMM screening study. - Óskarsson JÞ; Rögnvaldsson S; Thorsteinsdottir S; Long TE; Ólafsson A; Eythorsson E; Jónsson Á; Viðarsson B; Önundarson PT; Agnarsson BA; Pálmason R; Sigurðardóttir M; et al. (Blood cancer journal, 2024)