[1] UT Southwestern Med Ctr, Dept Internal Med, Dallas, TX USA
[2] UT Southwestern Med Ctr, Clin Sci, Dallas, TX USA
[3] VA North Texas Hlth Care Syst, Div Rheumatol, Dept Med, Dallas, TX USA
[4] Yale Sch Med, Dept Med, New Haven, CT USA
[5] VA Connecticut Hlth Care Syst, Dept Med, West Haven, CT USA
[6] Univ Washington, Dept Rehabil Med, Seattle, WA 98195 USA
[7] Univ Washington, Comparat Effectiveness Cost & Outcomes Res Ctr, Seattle, WA USA
[8] Weill Cornell Med Coll, Div Geriatr & Palliat Med, New York, NY USA