AF Remacha, B Arrizabalaga, A Villegas, R Manteiga, T Calvo, A Julia, I Fernandez Fuertes, FA Gonzalez, L Font, J Junca, A del Arco, JJ Malcorra, EP Equiza, BP de Mendiguren, M Romero. Erythropoietin plus granulocyte colony-stimulating factor in the treatment of myelodysplastic syndromes. Identification of a subgroup of responders. The Spanish Erythropathology Group. Haematologica 1999;84(12):1058-1064; https://doi.org/10.3324/%x.