Review

1. Redefining infantile-onset multisystem phenotypes of coenzyme Q10-deficiency in the next-generation sequencing era
2. Cryogenic electron paramagnetic resonance spectroscopy of flash-frozen tissue for characterization of mitochondrial disease
3. Role of transfer RNA modification and aminoacylation in the etiology of congenital intellectual disability
4. Mitochondrial translation defects and human disease

Original Article

1. The North American mitochondrial disease registry
2. Spectrum of MECP2 mutations in Indian females with Rett Syndrome - a large cohort study

Opinion

1. Intellectual disability, the long way from genes to biological mechanisms