title: Choline: determination using gas chromatography/mass spectrometry.
authors.affiliation: Nutrient Metabolism Laboratory, Department of Pathology, Boston University School of Medicine, Boston, MA 02118, USA.
authors.forename: S H
authors.initials: SH
authors.lastname: Zeisel
authors.forename: K A
authors.initials: KA
authors.lastname: daCosta