1. School of Public Health; University of Michigan; 109 Observatory Street 48109-2029 Ann Arbor MI USA
2. Program for Research on Black Americans, Research Center for Group Dynamics, Institute for Social Research; University of Michigan; Ann Arbor MI USA
3. Prevention Research Center of Michigan, School of Public Health; University of Michigan; Ann Arbor MI USA
4. Flint Odyssey House; 1225 Martin Luther King Drive Flint MI USA
5. Department of Psychiatry, Prevention Research Center of Michigan, School of Public Health; University of Michigan; Ann Arbor MI USA