Leukoencephalopathy with brain stem and spinal cord involvement and high lactate: a genetically proven case with distinct MRI findings. - Uluc K; Baskan O; Yildirim KA; Ozsahin S; Koseoglu M; Isak B; Scheper GC; Gunal DI; van der Knaap MS (Journal of the neurological sciences, 2008)