Chang M, Rowland CM, Garcia VE, Schrodi SJ, Catanese JJ, van der Helm-van Mil AHM, Ardlie KG, Amos CI, Criswell LA, Kastner DL, Gregersen PK, Kurreeman FAS, Toes REM, Huizinga TWJ, Seldin MF, Begovich AB. A Large-Scale Rheumatoid Arthritis Genetic Study Identifies Association at Chromosome 9q33.2. PLoS Genet. 2008 Jun 27;4(6):e1000107. doi: 10.1371/journal.pgen.1000107.