Effects of Oral Creatine Supplementation in a Patient with MELAS Phenotype and Associated Nephropathy - Barisic, N; Bernert, G; Ipsiroglu, O; Stromberger, C; Müller, T; Gruber, S; Prayer, D; Moser, E; Bittner, R E; Stöckler-Ipsiroglu, S (Neuropediatrics, 2002)