title: Severe Vitamin B12 Deficiency; an Unusual Cause of Developmental Regression in Infants.
authors.affiliation: University Hospital Limerick, Dooradoyle, Limerick, Ireland.
authors.forename: T I
authors.initials: TI
authors.lastname: Yousif
authors.affiliation: University Hospital Limerick, Dooradoyle, Limerick, Ireland.
authors.forename: P J
authors.initials: PJ
authors.lastname: Shukla
authors.affiliation: University Hospital Limerick, Dooradoyle, Limerick, Ireland.
authors.forename: S
authors.initials: S
authors.lastname: Gallagher
mesh_terms: D002658:Developmental Disabilities / Q000209:etiology*; D006801:Humans; D007223:Infant; D014806:Vitamin B 12 Deficiency / Q000150:complications*