1 Veterans Affairs Mid-Atlantic Mental Illness Research, Education, and Clinical Center, and Research and Academic Affairs Service Line, W.G. Hefner Veterans Affairs Medical Center, Salisbury, N.C. (Lad, Hurley, Taber); Departments of Psychiatry and Radiology, Wake Forest School of Medicine, Winston-Salem, N.C., and Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston (Hurley); and Division of Biomedical Sciences, Via College of Osteopathic Medicine, Blacksburg, Va., and Department of Physical Medicine and Rehabilitation, Baylor College of Medicine, Houston (Taber).