RT Journal Article SR Electronic T1 Abrupt Development of Sarcoidosis with a Prodromal Increase in Plasma Osteopontin in a Patient with Rheumatoid Arthritis During Treatment with Etanercept JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 210 OP 211 DO 10.3899/jrheum.090647 VO 37 IS 1 A1 SHINO TAKATORI A1 YASUYUKI KAMATA A1 TAKAMASA MUROSAKI A1 MASAHIRO IWAMOTO A1 SEIJI MINOTA YR 2010 UL http://www.jrheum.org/content/37/1/210.abstract AB