1. University of Alabama at Birmingham, Birmingham, Alabama (R.A.L.)
2. Birmingham Veterans Affairs Medical Center and University of Alabama at Birmingham, Birmingham, Alabama (R.M.C.)
3. Portland Veterans Affairs Medical Center and Oregon Health & Science University, Portland, Oregon (L.L.H.)
4. University of Illinois College of Medicine at Urbana-Champaign, Urbana, Illinois (J.A.J.)
5. University of Connecticut Health Center, Farmington, Connecticut (R.A.)
6. and American College of Physicians, Philadelphia, Pennsylvania (A.Q.).