1. U.S. Department of Veterans Affairs, VA Connecticut Healthcare System West Haven Connecticut USA
2. Department of Psychiatry Yale School of Medicine New Haven Connecticut USA
3. Department of Epidemiology Columbia University Mailman School of Public Health New York New York USA
4. Pain Treatment Services The APT Foundation, Inc. New Haven Connecticut USA
5. Department of Foundational Medical Studies Oakland University William Beaumont School of Medicine Rochester Michigan USA
6. Department of Psychology University of Bridgeport Bridgeport Connecticut USA