Baer AN, McAdams DeMarco M, Shiboski SC, Lam MY, Challacombe S, Daniels TE et al. The SSB-positive/SSA-negative antibody profile is not associated with key phenotypic features of Sjögren’s syndrome. Annals of the Rheumatic Diseases. 2015 aug.;74(8):1557-61. doi: 10.1136/annrheumdis-2014-206683