title: Letter to the editor.
authors.forename: C L
authors.initials: CL
authors.lastname: Feetham
authors.forename: P
authors.initials: P
authors.lastname: Ireland
authors.forename: A
authors.initials: A
authors.lastname: White
mesh_terms: D000328:Adult; D000928:Antidepressive Agents / Q000494:pharmacology; D003866:Depressive Disorder / Q000188:drug therapy* / Q000503:physiopathology*; D004351:Drug Resistance; D004359:Drug Therapy, Combination; D005260:Female; D005494:Folic Acid Deficiency / Q000150:complications*; D006801:Humans; D002955:Leucovorin / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D000928:Antidepressive Agents; D002955:Leucovorin