I. V. Barbosa, S. F. Maia, E. M. Melo, R. M. B. Studart, F. E. T. Lima, and Z. M. de F. Carvalho, “Nursing professionals’ knowledge about erythropoietin”, Rev. Esc. Enferm. USP, vol. 45, no. 3, pp. 617–623, Jun. 2011, doi: 10.1590/S0080-62342011000300010.