title: Level of the indication of biologic agents in the 2012 American College of Rheumatology recommendations for the treatment of rheumatoid arthritis: comment on the article by Singh et al.
authors.forename: Niels
authors.initials: N
authors.lastname: Graudal
authors.forename: Gesche
authors.initials: G
authors.lastname: Jürgens
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D001688:Biological Products / Q000627:therapeutic use*; D006801:Humans; D017410:Practice Guidelines as Topic; D012219:Rheumatology / Q000639:trends*
chemical_list: D018501:Antirheumatic Agents; D001688:Biological Products