- Muscle phosphofructokinase deficiency in a myopathic child with severe mental retardation and aplasia of cerebellar vermis. Pastoris, O., Dossena, M., Vercesi, L., Scelsi, R., Torcetta, F., Savasta, S., Bianchi, E. Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery. (1992)