Human vitamin B12 absorption measurement by accelerator mass spectrometry using specifically labeled (14)C-cobalamin.
Carkeet C, Dueker SR, Lango J, Buchholz BA, Miller JW, Green R, Hammock BD, Roth JR, Anderson PJ.
Proc Natl Acad Sci U S A. 2006 Apr 11; 103(15):5694-9. Epub 2006 Apr 3.
[Proc Natl Acad Sci U S A. 2006]