aDivision of Rheumatology, Department of Internal Medicine, University of Michigan

bCenter for Clinical Management Research, VA Ann Arbor Healthcare System

cRheumatology Section, VA Ann Arbor Healthcare System, Ann Arbor, Michigan, USA

Correspondence to David A. Fox, MD, Division of Rheumatology, Department of Internal Medicine, 300 North Ingalls, Suite 7C27, Ann Arbor, MI 48109, USA. Tel: +1 734 936 5566; e-mail: [email protected]