Monoclonal Gammopathy of Undetermined Significance

From the Hematology Department, Institut Clinic de Malaties Hematologiques i Oncologiques (ICMHO), Hospital Clinic, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Postgraduate School of Hematology Farreras Valenti, Universitat de Barcelona, Barcelona. Address reprint requests to Dr. Blade at the Hematology Department, Universitat de Barcelona Hospital Clinic, Villarroel 170, E-08036 Barcelona, Spain, or at [email protected].