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A further important advance was made in the early 1960s by Doniach with the recognition that pernicious anemia is an autoimmune disease
Without treatment, this leads to megaloblastic anaemia and potentially serious neurological complications
Oral B12 might need several weeks to boost blood levels
Q: Where should the injections be stored before use
B12 supplementation is very safe and side effects are very rare, but supplementation is often required for life
Laird, Aisling M
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