Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleRF vs. anti-CCP: competitor or companion?AuthorsDuck-An Kim; Think-You KimAbstractA letter to the editor is presented in response to the article "Is rheumatoid factor still a superior test for the diagnosis of rheumatoid arthritis?" by U. Singh and colleagues that was published in a 2010 issue.SubjectsLETTERS to the editor; RHEUMATOID factor; RHEUMATOID arthritis diagnosisPublicationRheumatology International, 2011, Vol 31, Issue 9, p1257ISSN0172-8172Publication typeLetterDOI10.1007/s00296-010-1585-0