Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) STABLER SP,Elevation of total homocysteine in serum of patients with cobalamin or folate deficiency detected by capillary gas chromatography-mass spectrometry,J. Clin. Invest.,,,1988,81,,466-474,https://cir.nii.ac.jp/crid/1570291225453179520,