Data supplements
Erratum
The authors and their affiliations are incorrectly listed in the article. The authors and their respective affiliations should be listed as:
Fl�vio T. Braga, Ant�nio J. Rocha, H�lio R. Gomes, Guinel Hernandez Filho, Carlos J. Silva and Ricardo B. Fonseca
From Santa Casa de Miseric�rdia de S�o Paulo, Section of Radiology (F.T.B., A.J.R., G.H.F., C.J.S.), Fleury-Centro de Medicina Diagn�stica, Section of Radiology (F.T.B., A.J.R., G.H.F., C.J.S., R.B.F) and Section of Neurology (H.R.G.), S�o Paulo, Brazil and Vanderbilt University School of Medicine, Department of Radiology and Radiological Sciences (R.B.F.), Nashville, TN.