title: The battle between anti-cyclic citrullinated peptide and rheumatoid factor tests--a winner at last?
authors.affiliation: Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands. dvanderwoude@lumc.nl
authors.forename: Diane
authors.initials: D
authors.lastname: van der Woude
authors.forename: Tom W J
authors.initials: TW
authors.lastname: Huizinga