title: Progress in the evolution of systemic sclerosis classification criteria and recommendation for additional comparative specificity studies.
authors.affiliation: Departments of Medicine and Epidemiology, University of Illinois College of Medicine (UIC), Chicago, Illinois, USA; amasi@uic.edu.
authors.forename: Alfonse T
authors.initials: AT
authors.lastname: Masi
authors.affiliation: Department of Medicine, Division of Rheumatology and Clinical Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Medsger
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008947:Mixed Connective Tissue Disease / Q000175:diagnosis*; D012595:Scleroderma, Systemic / Q000175:diagnosis*