Waldenström's macroglobulinaemia-defined by presence of IgM (usually kappa) paraprotein, meeting definite electrophysiological criteria for CIDP, Antibodies to myelin-associated glycoprotein (MAG) and other neural antigens, IgM paraproteinaemic demyelinating neuropathy, Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), Clinically useful guidelines-for patients with demyelinating neuropathy and a paraprotein (paraproteinaemic demyelinating neuropathy, Patients with IgM PDN, Typical syndromes of paraproteinaemic demyelinating neuropathy (PDN), IgG or IgA paraproteinaemic demyelinating neuropathy, Paraproteinaemic demyelinating neuropathies, Standard serum protein electrophoresis (SPEP) and serum immunoelectrophoresis (SIEP) and serum immunofixation electrophoresis (SIFE), PDN)