1. From the Division of Rheumatology, Mayo Clinic, Rochester, MN (S.R.Y.); the Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston (D.L.B.); the Division of Rheumatology, University of Nebraska Medical Center, Omaha (T.R.M.); the Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill (G.G.K.); Metroplex Clinical Research Center and University of Texas Southwestern Medical Center, Dallas (R.F.); Pfizer, Madrid (J.L.R.); Pfizer, New York (R.G....