Anti-synthetase syndrome in ANA and anti-Jo-1 negative patients presenting with idiopathic interstitial pneumonia.
Fischer A, Swigris JJ, du Bois RM, Lynch DA, Downey GP, Cosgrove GP, Frankel SK, Fernandez-Perez ER, Gillis JZ, Brown KK. Anti-synthetase syndrome in ANA and anti-Jo-1 negative patients presenting with idiopathic interstitial pneumonia. Respir Med. 2009 Nov; 103(11):1719-24.