Leigh-like syndrome with the T8993G mutation in the mitochondrial ATPase 6 gene: long-term follow-up discloses a slowly progressive course - Sobreira, Cláudia Ferreira da Rosa; Marques Júnior, Wilson; Pontes-Neto, Octávio Marques; Santos, Antônio Carlos dos; Pina Neto, João Monteiro de; Barreira, Amilton Antunes (Journal of the Neurological Sciences, 2009)