How To Identify And Treat a Vitamin B12 Deficiency.

Sources-
https://www.ncbi.nlm.nih.gov/books/NBK441923/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3142730/
https://pubmed.ncbi.nlm.nih.gov/26997378/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4406448/
https://www.ncbi.nlm.nih.gov/books/NBK537254/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4341306/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6930825/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2648137/
https://pubmed.ncbi.nlm.nih.gov/33851436/
https://pubmed.ncbi.nlm.nih.gov/18709885/
https://pubmed.ncbi.nlm.nih.gov/34116377/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4424520/
ncbi.nlm.nih.gov/pmc/articles/PMC5485731/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1925055/
https://pubmed.ncbi.nlm.nih.gov/25720716/