1. Dr. Bryan, Dr. Clemans, and Mr. Williams are with the National Center for Veterans Studies, University of Utah, Salt Lake City; Dr. Mintz is with the Psychiatry Department, University of Texas Health Sciences Center, San Antonio; Dr. Burch and Dr. Leeson are with the U.S. Army Medical Department Activity, Fort Carson, Colorado Springs, Colorado; Dr. Rudd is with the University of Memphis, Memphis, Tennessee.