title: Author's reply to Charkin.
authors.affiliation: Galway University Hospital, County Galway, Republic of Ireland alansugrue@gmail.com.
authors.forename: Alan
authors.initials: A
authors.lastname: Sugrue
mesh_terms: D000748:Anemia, Macrocytic / Q000209:etiology*; D003221:Confusion / Q000209:etiology*; D005260:Female; D006801:Humans; D007004:Hypoglycemic Agents / Q000009:adverse effects*; D008687:Metformin / Q000009:adverse effects*; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis*
chemical_list: D007004:Hypoglycemic Agents; D008687:Metformin