title: Criteria for the classification of primary fibromyalgia syndrome (fibrositis): an unsolved problem.
authors.affiliation: Rheumatic Disease Unit, University of Pisa, Italy.
authors.forename: C
authors.initials: C
authors.lastname: Vitali
authors.forename: A
authors.initials: A
authors.lastname: Taroni
mesh_terms: D005356:Fibromyalgia / Q000145:classification / Q000175:diagnosis*; D006801:Humans