1 From the Mental Health Service Line (KMR), the Research and Academic Affairs Service Line (RAH, KHT), and the Veterans Affairs Mid-Atlantic Mental Illness Research, Education, and Clinical Center (RAH, KHT), W.G. Hefner Veterans Affairs Medical Center, Salisbury, NC; the Depts. of Psychiatry and Radiology, Wake Forest School of Medicine, Winston-Salem, NC (RAH); the Menninger Dept. of Psychiatry and Behavioral Sciences (RAH) and the Dept. of Physical Medicine and Rehabilitation (KHT), Baylor College of Medicine, Houston, TX; and the Division of Biomedical Sciences, Edward Via College of Osteopathic Medicine, Blacksburg, VA (KHT).