AP Ng, A Wei, D Bhurani, P Chapple, F Feleppa, S Juneja. The sensitivity of CD138 immunostaining of bone marrow trephine specimens for quantifying marrow involvement in MGUS and myeloma, including samples with a low percentage of plasma cells. Haematologica 2006;91(7):972-975; https://doi.org/10.3324/%x.