title: Classification in systemic sclerosis.
authors.forename: Sindhu R
authors.initials: SR
authors.lastname: Johnson
authors.forename: Ronald M
authors.initials: RM
authors.lastname: Laxer
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D006801:Humans; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D011379:Prognosis; D012595:Scleroderma, Systemic / Q000145:classification* / Q000473:pathology / Q000503:physiopathology; D012720:Severity of Illness Index