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- [1] COMPARATIVE EFFECTS OF VITAMIN B12, OROTIC ACID AND METHIONINE ON INCORPORATION OF P32 IN RNA AND DNA IN CHICK LIVER DURING VITAMIN B12 DEFICIENCY ITALIAN JOURNAL OF BIOCHEMISTRY, 1961, 10 (06): : 508 - &
- [3] Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency COCHRANE DATABASE OF SYSTEMATIC REVIEWS, 2005, (03):
- [4] Oral vitamin B12 versus intramuscular vitamin B12, for vitamin B12 deficiency COCHRANE DATABASE OF SYSTEMATIC REVIEWS, 2018, (03):