Andersen JP, Bøgsted M, Dybkær K, Mellqvist U-H, Morgan GJ, Goldschmidt H, Dimopoulos MA, Einsele H, San Miguel J, Palumbo A, et al. Global myeloma research clusters, output, and citations: A bibliometric mapping and clustering analysis. PLoS ONE [Internet]. 2015;10(1).