Gkotzamanidou M, Kastritis E, Roussou M, Migkou M, Gavriatopoulou M, Nikitas N, Gika D, Mparmparousi D, Matsouka C, Terpos E, et al. Increased serum lactate dehydrongenase should be included among the variables that define very-high-risk multiple myeloma. Clinical Lymphoma, Myeloma and Leukemia [Internet]. 2011;11(5):409 - 413.