Answers are grounded in this paper and cite their sources.
In inpatients, functional B12 deficiency and functional folate deficiency increase with age and are not associated with anemia or macrocytosis. False vitamin B deficiencies are frequent.
No takes yet. Share an insight, caveat, or question.
Mézière et al. (2014) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: