title: What is the outcome of undifferentiated arthritis?
authors.affiliation: Servicio de Reumatología, Hospital Universitario Germans Trias i Pujol, Badalona, Barcelona, España. Electronic address: Sam63100@hotmail.com.
authors.forename: Samantha
authors.initials: S
authors.lastname: Rodríguez-Muguruza
authors.affiliation: Servicio de Reumatología, Hospital Universitario Germans Trias i Pujol, Badalona, Barcelona, España.
authors.forename: Melania
authors.initials: M
authors.lastname: Martínez-Morillo
authors.affiliation: Servicio de Reumatología, Hospital Universitario Germans Trias i Pujol, Badalona, Barcelona, España.
authors.forename: Anne
authors.initials: A
authors.lastname: Riveros-Frutos
authors.affiliation: Servicio de Reumatología, Hospital Universitario Germans Trias i Pujol, Badalona, Barcelona, España.
authors.forename: Xavier
authors.initials: X
authors.lastname: Tena
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000503:physiopathology; D059019:Clinical Coding; D018450:Disease Progression; D005500:Follow-Up Studies; D006801:Humans; D011379:Prognosis; D012189:Retrospective Studies