Authors: Reva C Lawrence; David T Felson; Charles G Helmick; Lesley M Arnold; Hyon Choi; Richard A Deyo; Sherine Gabriel; Rosemarie Hirsch; Marc C Hochberg; Gene G Hunder; Joanne M Jordan; Jeffrey N Katz; Hilal Maradit Kremers; Frederick Wolfe Journal: Arthritis Rheum Date: 2008-01