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It is essential for DNA synthesis, red blood cell formation, and neurological function
doi: 10.1101/gad.334219.119 62 ZouYSongWZhouLMaoYHongW
(2014) found coring in 40.8% of punctures with blunt plastic safety needles versus 4.2% with sharp 18G hypodermics roughly a tenfold difference
Prevalence and Risk Factors for Functional Vitamin B12 Deficiency in Patients with Crohns Disease
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