References
1. Pincus T, Callahan LF, Sale WG, Brooks AL, Payne LE, Vaughn WK. Severe functional declines, work disability, and increased mortality in seventy-five rheumatoid arthritis patients studied over nine years. Arthritis Rheum. 1984; 27:864–72.
2. Emery P, Salmon M. Early rheumatoid arthritis: time to aim for remission? Ann Rheum Dis. 1995; 54:944–7.
3. Young A, Dixey J, Cox N, Davies P, Devlin J, Emery P, et al. How does functional disability in early rheumatoid arthritis (RA) affect patients and their lives? Results of 5 years of followup in 732 patients from the Early RA Study (ERAS). Rheumatology (Oxford). 2000; 39:603–11.
4. Dixey J, Solymossy C, Young A. Early RA Study. Is it possible to predict radiological damage in early rheumatoid arthritis (RA)? A report on the occurrence, progression, and prognostic factors of radiological erosions over the first 3 years in 866 patients from the Early RA Study (ERAS). J Rheumatol Suppl. 2004; 69:48–54.
5. Egsmose C, Lund B, Borg G, Pettersson H, Berg E, Brodin U, et al. Patients with rheumatoid arthritis benefit from early 2nd line therapy: 5 year followup of a prospective double blind placebo controlled study. J Rheumatol. 1995; 22:2208–13.
6. van der Heide A, Jacobs JW, Bijlsma JW, Heurkens AH, van Booma-Frankfort C, van der Veen MJ, et al. The effectiveness of early treatment with "second-line" antirheumatic drugs. A randomized, controlled trial. Ann Intern Med. 1996; 124:699–707.
7. Lard LR, Visser H, Speyer I, vander Horst-Bruinsma IE, Zwinderman AH, Breedveld FC, et al. Early versus de-layed treatment in patients with recent-onset rheumatoid arthritis: comparison of two cohorts who received different treatment strategies. Am J Med. 2001; 111:446–51.
8. Arnett FC, Edworthy SM, Bloch DA, McShane DJ, Fries JF, Cooper NS, et al. The American Rheumatism Association 1987 revised criteria for the classification of rheumatoid arthritis. Arthritis Rheum. 1988; 31:315–24.
9. Aletaha D, Neogi T, Silman AJ, Funovits J, Felson DT, Bingham CO 3rd, et al. 2010 rheumatoid arthritis classification criteria: an American College of Rheumatology/European League Against Rheumatism collaborative initiative. Ann Rheum Dis. 2010; 69:1580–8.
10. Moon SJ, Lee CH, Kim YS, Park YJ, Kang KY, Kwok SK, et al. Usefulness and limitation of 2010 ACR/EULAR classification criteria in korean patients with early RA. J Rheum Dis. 2012; 19:326–33.
11. Fautrel B, Combe B, Rincheval N, Dougados M. ESPOIR Scientific Committee. Level of agreement of the 1987 ACR and 2010 ACR/EULAR rheumatoid arthritis classification criteria: an analysis based on ESPOIR cohort data. Ann Rheum Dis. 2012; 71:386–9.
12. Varache S, Cornec D, Morvan J, Devauchelle-Pensec V, Berthelot JM, Le Henaff-Bourhis C, et al. Diagnostic accuracy of ACR/EULAR 2010 criteria for rheumatoid arthritis in a 2-year cohort. J Rheumatol. 2011; 38:1250–7.
13. Jung SJ, Lee SW, Ha YJ, Lee KH, Kang Y, Park MC, et al. Patients with early arthritis who fulfil the 1987 ACR classification criteria for rheumatoid arthritis but not the 2010 ACR/EULAR criteria. Ann Rheum Dis. 2012; 71:1097–8.
14. van der Linden MP, Knevel R, Huizinga TW, van der Helm-van Mil AH. Classification of rheumatoid arthritis: comparison of the 1987 American College of Rheumatology criteria and the 2010 American College of Rheumatology/European League Against Rheumatism criteria. Arthritis Rheum. 2011; 63:37–42.
15. Zeidler H. How can misclassification be prevented when using the 2010 American College of Rheumatology/European League Against Rheumatism rheumatoid arthritis classification criteria? Comment on the article by van der Linden et al. Arthritis Rheum. 2011; 63:2544–6.
16. Avouac J, Gossec L, Dougados M. Diagnostic and pre-dictive value of anti-cyclic citrullinated protein antibodies in rheumatoid arthritis: a systematic literature review. Ann Rheum Dis. 2006; 65:845–51.