1. University of California, San Francisco; Division of Rheumatology; 521 Parnassus Avenue, C405 Box 0633 San Francisco CA USA 94143-0633
2. Internal Med/Rheum.; Univ. of Iowa Hospital & Clinic SE 615 GH Iowa City IA USA 52242
3. Platte Valley Medical Group; 3320 Ave A Kearney NE USA 68848-0550
4. University of Ottawa; Centre for Global Health, Institute of Population Health; One Stewart Street, Room 206 Ottawa Ontario Canada K1N 6N5
5. University of Ottawa; Institute of Population Health; 1 Stewart St. Room 312 Ottawa Ontario Canada K1N 6N5
6. University of Ottawa Heart Institute; Cardiovascular Research Reference Centre; Room H1-1 40 Ruskin Street Ottawa Ontario Canada K1Y 4W7
7. The University of Texas, M.D. Anderson Cancer Center; General Internal Medicine, Ambulatory Treatment and Emergency Care; 1515 Holcombe Blvd Unit 437 Houston Texas USA 77030