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Vitamin B12 Status and Optimal Range for Hemoglobin Formation in Elite Athletes
[DOI: 10.1177/0379572115585772] [DOI] [PubMed] [Google Scholar] Castelli 2011 Castelli MC, Friedman K, Sherry J, Brazzillo K, Genoble L, Bhargava P, et al
PMID 17434786
About 20% of patients with iron deficiency anemia without an obvious cause have evidence of pernicious anemia/AAG (low B12, positive anti-parietal cell/IF antibodies, and/or gastric biopsy)
