UK Myeloma Forum (UKMF) and Nordic Myeloma Study Group (NMSG): guidelines for the investigation of newly detected M-proteins and the management of monoclonal gammopathy of undetermined significance (MGUS).

Avon Haematology Unit, Bristol Haematology and Oncology Centre, Bristol, Department of Haematology, St Helier Hospital, Carshalton, Surrey, UK, Department of Haematology, Sahlgrenska University Hospital, Gothenburg, Sweden, Department of Medicine, Malmö University Hospital, Malmö, Sweden, Division of Immunity and Infection, University of Birmingham, Birmingham, Department of Clinical Biochemistry, Frenchay Hospital, Bristol, Department Haematology, University College, London, Glasgow Western Infirmary, Glasgow, UK, Department of Haematology, NTNU/St Olavs Hospital, Trondheim, Department of Haematology, Ullevål University Hospital, Oslo, Norway, Department of Haematology Aalborg Hospital, Aarhus University Hospital, Aalborg, Denmark, and Myeloma UK.