Usefulness of intraoperative electrical subcortical mapping during surgery for low-grade gliomas located within eloquent brain regions: functional results in a consecutive series of 103 patients. - Duffau,H.; Capelle,L.; Denvil,D.; Sichez,N.; Gatignol,P.; Taillandier,L.; Lopes,M.; Mitchell,M.C.; Roche,S.; Muller,J.C.; Bitar,A.; Sichez,J.P.; et al. (J Neurosurg, 2003)