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- [11] METABOLIC PRECURSORS OF METHYLMALONIC ACID IN VITAMIN-B12 DEFICIENCY LANCET, 1967, 1 (7487): : 424 - &
- [13] THE USE OF THE SERUM VITAMIN-B12 ASSAY IN THE DIAGNOSIS OF VITAMIN-B12 DEFICIENCY ACTA MEDICA SCANDINAVICA, 1957, 159 (04): : 307 - 321