Case Reports

Two newborns with nutritional vitamin B12 deficiency: challenges in newborn screening for vitamin B12 deficiency

The Children's Hospital of Philadelphia, Section of Metabolism, PA 19104, USA.
The Children's Hospital of Philadelphia, Section of Metabolism, PA 19104, USA.
The Children's Hospital of Philadelphia, Section of Metabolism, PA 19104, USA.
Vol. 90 No. 12_Suppl (2005): December, 2005 https://doi.org/10.3324/%25x