what happens if vitamin b12 injections don& 39 You Need to Know About How Long Does It Take
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London, United Kingdom: Academic Press

doi: 10.18632/oncotarget.17896
This contrasts with category codes like D51 (vitamin B12 deficiency anemia) which serve organizational purposes but cannot appear on claims

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doi: 10.1016/j.ejim.2010.05.007, 18

As a whole b12 serves as co-factor for many reactions in the body including proper functioning of the nervous system, metabolism, neurotransmitter production, DNA repair, cell membrane production, and more
