title: In Reply: Vitamin B12 deficiency.
authors.affiliation: Assistant Clinical Professor of Medicine, University of California, Irvine, CA, USA.
authors.forename: Douglas L
authors.initials: DL
authors.lastname: Nguyen
authors.affiliation: University of California, Irvine, CA, USA.
authors.forename: Shelly
authors.initials: S
authors.lastname: Maithel
authors.affiliation: University of California, Irvine, CA, USA.
authors.forename: Alex K
authors.initials: AK
authors.lastname: Duong
authors.affiliation: University of California, Irvine, CA, USA.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Zhang