Authors: Sharon A Chung; Chao Tian; Kimberly E Taylor; Annette T Lee; Ward A Ortmann; Geoffrey Hom; Robert R Graham; Joanne Nititham; Jennifer A Kelly; Jean Morrisey; Hui Wu; Hong Yin; Marta E Alarcón-Riquelme; Betty P Tsao; John B Harley; Patrick M Gaffney; Kathy L Moser; Susan Manzi; Michelle Petri; Peter K Gregersen; Carl D Langefeld; Timothy W Behrens; Michael F Seldin; Lindsey A Criswell Journal: Arthritis Rheum Date: 2009-08