1. 1Psychiatry, University of Michigan,
Ann Arbor, Michigan, USA
2. 2Statistics, Pennsylvania State University, University Park,
Pennsylvania, USA
3. 3University of Michigan School of Public Health,
Ann Arbor, Michigan, USA
4. 4University of Michigan Injury Center,
Ann Arbor, Michigan, USA
5. 5Emergency Medicine, University of Michigan,
Ann Arbor, Michigan, USA