1. Speech-Language Pathology Program, School of Health Professions, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX
2. South Texas Veterans Health Care System, Polytrauma Rehabilitation Center, 7400 Merton Miner Dr. San Antonio, TX
3. Bedford Center for Health Quality, Outcomes and Economic Research, Edith Nourse Rogers Memorial Veterans Hospital, 200 Springs Rd. Bedford, MA
4. Department of Epidemiology & Biostatistics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX