Monoclonal gammopathy of undetermined significance (MGUS) and smoldering (asymptomatic) multiple myeloma: IMWG consensus perspectives risk factors for progression and guidelines for monitoring and management. - Kyle, R. A.; Durie, B. G. M.; Rajkumar, S. V.; Landgren, O.; Blade, J.; Merlini, G.; Kröger, N.; Einsele, H.; Vesole, D. H.; Dimopoulos, M.; San Miguel, J.; Avet-Loiseau, H.; et al. (Leukemia (08876924), 2010)