Breastfed Infants With Spells, Tremor, or Irritability : Rule Out Vitamin B12 Deficiency
Background: In Norway, 5-10% of neonates and infants have biomarkers suggesting vitamin B12 deficiency from newborn screening tests and unselected clinical screening, respectively. Aims: The aims were to identify risk factors and describe presenting symptoms and biochemical profiles in infants diagnosed with vitamin B12 deficiency. Methods: In this case-control study, we searched hospital medical