title: Conclusion and identification of the core set of variables to be used in clinical investigations.
authors.affiliation: Rheumatology Unit, Second University of Naples, Policlinico, Via Pansini no. 5, 80131 Napoli, Italy. gabriele.valentini@unina2.it
authors.forename: G
authors.initials: G
authors.lastname: Valentini
authors.forename: T A
authors.initials: TA
authors.lastname: Medsger
authors.forename: A J
authors.initials: AJ
authors.lastname: Silman
authors.forename: S
authors.initials: S
authors.lastname: Bombardieri
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D012219:Rheumatology / Q000379:methods / Q000592:standards; D012595:Scleroderma, Systemic / Q000150:complications / Q000175:diagnosis* / Q000276:immunology; D012720:Severity of Illness Index