1. Bichile L. Clinical features and organ involvement in RA. In: Rao URK, Mahendranath KM, Misra R, Gupta SJ, Handa R, Chaturvedi V, eds. Manual of Rheumatology. 4th ed. Mumbai: Indian Rheumatology Association; 2014. pp. 176-84.
2. Shah A, Clair EW. Rheumatoid arthritis. In: Longo DL, Fauci AS, Kasper DL, Hauser SL, Jameson JL, Loscalzo J, eds. Harrison’s Principles Internal Medicine. 18th ed. New York: McGraw-Hill; 2011. pp. 2738-52.
3. Voskuyl AE, Dijkmans BA. Remission and radiographic progression in rheumatoid arthritis. Clin Exp Rheumatol. 2006; 24: S-37-40.
4. Machold KP, Stamm TA, Nell VP. Very recent onset rheumatoid arthritis: clinical and serological patient characteristics associated with radiographic progression over the first years of disease. Rheumatology (Oxford). 2007; 46: 342-9.
5. Makinen H, Kautiainen H, Hannonen P. Sustained remission and reduced radiographic progression with combination disease modifying antirheumatic drugs in early rheumatoid arthritis. J Rheumatol. 2007; 34: 316-21.