CRIADO I, RODRÍGUEZ-CABALLERO A, GUTIÉRREZ ML, et al; Primary Health Care Group of Salamanca for the Study of MBL. Low-count monoclonal B-cell lymphocytosis persists after seven years of follow up and is associated with a poorer outcome. Haematologica. 2018 Jul;103(7):1198-1208. doi: 10.3324/haematol.2017.183954.