title: Combined effect size: comment on the metaanalysis of second-line drugs in rheumatoid arthritis.
authors.forename: M
authors.initials: M
authors.lastname: Boers
authors.forename: G H
authors.initials: GH
authors.lastname: Guyatt
authors.forename: A D
authors.initials: AD
authors.lastname: Oxman
mesh_terms: D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D003627:Data Interpretation, Statistical; D006801:Humans; D015201:Meta-Analysis as Topic; D011897:Random Allocation