I Van de Broek, X Leleu, R Schots, T Facon, K Vanderkerken, B Van Camp, I Van Riet. Clinical significance of chemokine receptor (CCR1, CCR2 and CXCR4) expression in human myeloma cells: the association with disease activity and survival. Haematologica 2006;91(2):200-206; https://doi.org/10.3324/%x.