title: [An approach to adopt in patients with metformin-associated vitamin B12 deficiency].
authors.forename: Francisco José
authors.initials: FJ
authors.lastname: Fernández Fernández
authors.forename: María
authors.initials: M
authors.lastname: Varela Manso
mesh_terms: D006801:Humans; D007004:Hypoglycemic Agents / Q000009:adverse effects*; D008687:Metformin / Q000009:adverse effects*; D014806:Vitamin B 12 Deficiency / Q000139:chemically induced* / Q000628:therapy*
chemical_list: D007004:Hypoglycemic Agents; D008687:Metformin