M. M. A. Shimmoto, P. Vicari, A. C. Fernandes, G. S. Guimarães, and M. S. Figueiredo, “XmnI polymorphism is associated with fetal hemoglobin levels in hypoplastic syndromes”, Sao Paulo Med J, vol. 124, no. 2, pp. 110–111, Mar. 2006.