title: Effect of folic acid supplementation on the efficacy of methotrexate treatment in rheumatoid arthritis: comment on the article by Khanna et al.
authors.forename: Sarah L
authors.initials: SL
authors.lastname: Morgan
authors.forename: Joseph E
authors.initials: JE
authors.lastname: Baggott
authors.forename: Graciela S
authors.initials: GS
authors.lastname: Alarcón
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D004347:Drug Interactions; D005492:Folic Acid / Q000627:therapeutic use*; D006397:Hematinics / Q000627:therapeutic use*; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use*
chemical_list: D018501:Antirheumatic Agents; D006397:Hematinics; D005492:Folic Acid; D008727:Methotrexate