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http://www.w3.org/1999/02/22-rdf-syntax-ns#type
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  • Sometimes the medicines used to treat rheumatoid arthritis, especially methotrexate, may result in lung disease. www.nlm.nih.gov/medlineplus/ency/article/000113.htm - Medical EncyclopediaCaplan syndrome ...
http://www.w3.org/ns/prov#wasQuotedFrom
  • nih.gov