[1] St Josephs Hlth Care, Beryl & Richard Ivey Rheumatol Day Programs, London, ON N6A 4V2, Canada
[2] Univ Western Ontario, Dept Med, Div Rheumatol, London, England
[3] Univ Western Ontario, Dept Psychol, London, England
[4] Univ Washington, Sch Med, Dept Rehabil Med, Seattle, WA 98195 USA
[5] Univ Washington, Med Ctr, Ctr Multidisciplinary Pain, Seattle, WA 98195 USA
[6] Yale Univ, Dept Psychiat, New Haven, CT 06520 USA
[7] Yale Univ, Dept Neurol, New Haven, CT 06520 USA
[8] Yale Univ, Dept Psychol, New Haven, CT 06520 USA
[9] VA Connecticut Healthcare Syst, West Haven, CT USA