1. Department of Hematology, Hospital Clínic of Barcelona, Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain;
2. Department of Immunology, Amyloidosis and Myeloma Unit, Hospital Clínic of Barcelona, Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain