Is rheumatoid factor still a superior test for the diagnosis of rheumatoid arthritis?

• Usha Singh, Anjali Vishwanath, Pramod K. Verma, Nand K. Singh, Ram C. Shukla, Sangeeta Singh, Suman Singh, Gyanendra K. Sonkar

• Rheumatology International, January 2010, Springer Science + Business Media
• DOI: 10.1007/s00296-009-1338-0