RT Journal Article SR Electronic T1 Beyond methotrexate: biologic therapy in rheumatoid arthritis JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 222 OP 226 DO 10.7861/clinmedicine.5-3-222 VO 5 IS 3 A1 Andrew J Ostör YR 2005 UL http://www.rcpjournals.org/content/5/3/222.abstract AB