Electron Microscopy / DNA / Mitochondrial DNA / Humans / Clinical / Male / Infant / Electron Transport / nuclear DNA / Newborn Infant / Cell nucleus / Hybrid Solar Cells / Clinical Investigation / DNA mutational analysis / Complex I / fibroblasts / genetic heterogeneity / Male / Infant / Electron Transport / nuclear DNA / Newborn Infant / Cell nucleus / Hybrid Solar Cells / Clinical Investigation / DNA mutational analysis / Complex I / fibroblasts / genetic heterogeneity