Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HALPERN MT,Impact of adalimumab on work participation in rheumatoid arthritis : comparison of an open-label extension study and a registry-based control group,Ann Rheum Dis,,,2009,68,,930-937,https://cir.nii.ac.jp/crid/1571980074246104448,