MEDLINE

The following search strategy was the original strategy developed for MEDLINE for this review: 1. exp arthritis, rheumatoid/ or *arthritis, juvenile rheumatoid/ or *caplan's syndrome/ or *felty's syndrome/ or *rheumatoid nodule/ or *sjogren's syndrome/ or *spondylitis, ankylosing/ or *still's disease, adult‐onset/ 2. (felty$ adj2 syndrome).tw. 3. (caplan$ adj2 syndrome).tw. 4. rheumatoid nodule.tw. 5. (sjogren$ adj2 syndrome).tw. 6. (sicca adj2 syndrome).tw. 7. still$ disease.tw. 8. (spondylitis adj2 ankylosing).tw. 9. (arthritis adj2 rheumat$).tw. 10. 10 or/1‐9 11. abatacept.tw. 12. orencia.tw. 13. anti‐interleukin$.tw. 14. anti‐tumor necrosis factor$.tw. 15. anti‐tumour necrosis factor$.tw. 16. anti‐tnf.tw. 17. exp Tumor Necrosis Factor 18. exp Immunosuppressive Agents 19. exp Immunoconjugates 20. exp Antirheumatic Agents 21. exp Antigens, Differentiation 22. or/11‐21 23. 10 and 22 24. clinical trial.pt. 25. randomized.ab. 26. placebo.ab. 27. dt.fs. 28. clinical trials/ 29. randomly.ab. 30.trial.ti. 31.groups.ab. 32. or/24‐29 33. animals/ 34. humans/ 35. 33 and 34 36. 33 not 35 37. 32 not 36