1. a University of Rochester Medical Center , Rochester , New York , USA
2. b VA VISN 2 Center of Excellence for Suicide Prevention , Canandaigua , New York , USA
3. c University of Connecticut , Mansfield , Connecticut , USA
4. d Duke University , Durham , North Carolina , USA
5. e State University of New York at Buffalo Research Institute on Addictions , Buffalo , New York , USA
6. f Washington University , St. Louis , Missouri , USA