De Salvo Cardullo, L., Weir Medina, J.E., León, M. y Gómez, O. 2013. Uncommon lymphocytic leukemias in patients from the state of Zulia, Maracaibo, Venezuela. I. The coexpression of lymphocytes B-cell and T-cell markers in two patients with chronic lymphocytic leukemia. Investigación Clínica. 29, 1 (jul. 2013).