- Serial measurements of hematologic counts during the active phase of human granulocytic ehrlichiosis. Bakken, J.S., Aguero-Rosenfeld, M.E., Tilden, R.L., Wormser, G.P., Horowitz, H.W., Raffalli, J.T., Baluch, M., Riddell, D., Walls, J.J., Dumler, J.S. Clin. Infect. Dis. (2001)