355604
Scleroderma is a chronic systemic autoimmune disease ( primarily of the skin - " derma " ) characterized by fibrosis ( or hardening - " sclero " ) , vascular alterations , and autoantibodies .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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